A MMA fighter enters the octagon during the Mixed Martial Arts (MMA) British Fighting Championship held at the Middlesbrough Sports Village in Middlesbrough, Britain October 23, 2021. Picture taken October 23, 2021. REUTERS/Lee Smith 

A MMA fighter jumps inside the octagon during the Mixed Martial Arts (MMA) British Fighting Championship held at the Middlesbrough Sports Village in Middlesbrough, Britain October 23, 2021. Picture taken October 23, 2021. REUTERS/Lee Smith 

A MMA fighter sits inside the octagon during the Mixed Martial Arts (MMA) British Fighting Championship held at the Middlesbrough Sports Village in Middlesbrough, Britain October 23, 2021. Picture taken October 23, 2021. REUTERS/Lee Smith 

MMA - UFC264 - Dustin Poirier v Conor McGregor - T-Mobile Arena, Las Vegas, United States - July 10, 2021 Conor McGregor is stretchered from the octagon after the fight REUTERS/Steve Marcus 

MMA - UFC264 - Dustin Poirier v Conor McGregor - T-Mobile Arena, Las Vegas, United States - July 10, 2021 Conor McGregor is stretchered from the octagon after the fight REUTERS/Steve Marcus 

MMA - UFC264 - Dustin Poirier v Conor McGregor - T-Mobile Arena, Las Vegas, United States - July 10, 2021 Conor McGregor is stretchered from the octagon after the fight REUTERS/Steve Marcus 

MMA - UFC264 - Dustin Poirier v Conor McGregor - T-Mobile Arena, Las Vegas, United States - July 10, 2021 Conor McGregor is stretchered from the octagon after the fight REUTERS/Steve Marcus 

MMA - UFC264 - Dustin Poirier v Conor McGregor - T-Mobile Arena, Las Vegas, United States - July 10, 2021 Conor McGregor is carried from the octagon after the fight REUTERS/Steve Marcus 

Kate and Cameron Reinhart stand in their 1880's Octagon house they are renovating during the coronavirus pandemic, in Norwich, eastern Connecticut, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Dan Fastenberg 

Kate and Cameron Reinhart stand on the porch of their 1880's Octagon house they are renovating during the coronavirus pandemic, in Norwich, eastern Connecticut, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Dan Fastenberg 

Kate and Cameron Reinhart stand in their 1880's Octagon house they are renovating during the coronavirus pandemic, in Norwich, eastern Connecticut, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Dan Fastenberg 

Kate and Cameron Reinhart stand in their 1880's Octagon house they are renovating during the coronavirus pandemic, in Norwich, eastern Connecticut, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Dan Fastenberg 

Kate and Cameron Reinhart stand on the porch of their 1880's Octagon house they are renovating during the coronavirus pandemic, in Norwich, eastern Connecticut, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Dan Fastenberg 

Kate and Cameron Reinhart stand on the porch of their 1880's Octagon house they are renovating during the coronavirus pandemic, in Norwich, eastern Connecticut, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Dan Fastenberg 

Kate and Cameron Reinhart stand on the porch of their 1880's Octagon house they are renovating during the coronavirus pandemic, in Norwich, eastern Connecticut, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Dan Fastenberg 

Kate and Cameron Reinhart walk in their 1880's Octagon house they are renovating during the coronavirus pandemic, in Norwich, eastern Connecticut, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Dan Fastenberg 

Kate and Cameron Reinhart are seen in their 1880's Octagon house they are renovating during the coronavirus pandemic, in Norwich, eastern Connecticut, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Dan Fastenberg 

Spectators in their cars look at Lucha Libre wrestler Octagon Jr as he takes part in the first drive-in wrestling event, amid the coronavirus disease (COVID-19) pandemic in Mexico City, Mexico October 2, 2020. Picture taken October 2, 2020. REUTERS/Carlos Jasso 

Spectators in their cars look at Lucha Libre wrestler Octagon Jr as he takes part in the first drive-in wrestling event, amid the coronavirus disease (COVID-19) pandemic in Mexico City, Mexico October 2, 2020. Picture taken October 2, 2020. REUTERS/Carlos Jasso 

Spectators in their cars look at Lucha Libre wrestler Octagon Jr as he takes part in the first drive-in wrestling event, amid the coronavirus disease (COVID-19) pandemic in Mexico City, Mexico October 2, 2020. Picture taken October 2, 2020. REUTERS/Carlos Jasso 

Lucha Libre wrestlers Octagon Jr. and Dave the Clown take part in the first drive-in wrestling event amid the coronavirus disease (COVID-19) pandemic in Mexico City, Mexico October 2, 2020. Picture taken October 2, 2020. REUTERS/Carlos Jasso 

Lucha Libre wrestler Octagon Jr. takes part in the first drive-in wrestling event as a fan watches from their car, amid the coronavirus disease (COVID-19) pandemic in Mexico City, Mexico October 2, 2020. Picture taken October 2, 2020. REUTERS/Carlos Jasso 

Mexican wrestler Octagon is pictured before an interview with Reuters, as matches are called off while the coronavirus disease (COVID-19) outbreak continues in Mexico City, Mexico, July 23, 2020. Picture taken July 23, 2020. REUTERS/Edgard Garrido 

Mexican wrestler Octagon holds his cloak before an interview with Reuters, as matches are called off while the coronavirus disease (COVID-19) outbreak continues in Mexico City, Mexico, July 23, 2020. Picture taken July 23, 2020. REUTERS/Edgard Garrido 

Police lines are seen blocking off part of Republic of Texas Boulevard following an explosion in Austin, Texas, U.S., March 19, 2018. REUTERS/Sergio Flores 

Police lines are seen blocking off part of Republic of Texas Boulevard following an explosion in Austin, Texas, U.S., March 19, 2018. REUTERS/Sergio Flores 

A weapon collector holds a 44 caliber gun in his house in Bordeaux, France, March 19, 2018. REUTERS/Regis Duvignau 

A weapon collector holds a 44 caliber gun in his house in Bordeaux, France, March 19, 2018. REUTERS/Regis Duvignau 

A weapon collector holds a 44 caliber gun in his house in Bordeaux, France, March 19, 2018. REUTERS/Regis Duvignau 

Women dressed in traditional attire pose as they take part in rehearsals for the "garba" dance ahead of the Navratri festival at Adalaj Stepwell, a five level octagonal step-well complex built in the 15th century, in the western Indian city of Ahmedabad September 21, 2014. Navratri, held in honour of Hindu Goddess Durga, is celebrated over a period of nine days where thousands of youths dance the night away in traditional costumes. Navratri starts on September 25. REUTERS/Amit Dave (INDIA - Tags: RELIGION ANNIVERSARY SOCIETY TPX IMAGES OF THE DAY) 

Performers dressed in traditional attire walk on a ledge before taking part in rehearsals for the "garba" dance ahead of the Navratri festival at Adalaj Stepwell, a five level octagonal step-well complex built in the 15th century, in the western Indian city of Ahmedabad September 21, 2014. Navratri, held in honour of Hindu Goddess Durga, is celebrated over a period of nine days where thousands of youths dance the night away in traditional costumes. Navratri starts on September 25. REUTERS/Amit Dave (INDIA - Tags: RELIGION ANNIVERSARY SOCIETY) 

A line crew repairs downed electric and phone wires beside the Diamond Rock octagonal 19th century schoolhouse in Malvern, Pennsylvania, February 8, 2014, in the aftermath of an ice storm which hit the Philadelphia area, where an estimated 280,000 PECO customers from the region lacked power. REUTERS/Mark Makela (UNITED STATES - Tags: DISASTER ENVIRONMENT) 

U.S. President Barack Obama is pictured during a heavy rain storm at a campaign rally in Glen Allen, Virginia, July 14, 2012. Obama travelled to Virginia on Saturday for campaign events. Rain drops on the front of the lens produced octagonal shapes in the image. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY) 

The octagonal Star of America (L), a 100.57-carats, flawless D colour necklace, is displayed during Graff Diamonds IPO roadshow in Hong Kong May 21,2012. Luxury jeweler Graff Diamonds, famous for its giant and rare gems, is forging ahead with a Hong Kong listing despite a sell-off that has rattled equity markets, setting a price range on Friday that would value the company at up to $4 billion. REUTERS/Tyrone Siu (CHINA - Tags: BUSINESS) 

Palestinians are reflected in mirrors as they sit outside their store in Gaza City April 24, 2012. REUTERS/Mohammed Salem (GAZA - Tags: SOCIETY TPX IMAGES OF THE DAY) 

A tourist walks inside an illuminated Adalaj Stepwell, a five level octagonal step-well complex built in the 15th century, during the World Heritage Week on the outskirts of the western Indian city of Ahmedabad November 19, 2011. REUTERS/Amit Dave (INDIA - Tags: SOCIETY TRAVEL) 

Tourists stand inside an illuminated Adalaj Stepwell, a five level octagonal step-well complex built in the 15th century, during the World Heritage Week on the outskirts of the western Indian city of Ahmedabad November 19, 2011. REUTERS/Amit Dave (INDIA - Tags: SOCIETY TRAVEL TPX IMAGES OF THE DAY) 

A just-started-dating couple takes a memorial photograph in front of N Seoul Tower and a traditional octagonal pavilion during Earth Hour in Seoul March 26, 2011. Earth Hour, when everyone around the world is asked to turn off lights for an hour from 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. REUTERS/Jo Yong-Hak (SOUTH KOREA - Tags: ENERGY ENVIRONMENT) 

A view of N Seoul Tower and a traditional octagonal pavilion before Earth Hour in Seoul March 26, 2011. Earth Hour, when everyone around the world is asked to turn off lights for an hour from 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. REUTERS/Jo Yong-Hak (SOUTH KOREA - Tags: ENERGY ENVIRONMENT) 

A combination picture shows a view of N Seoul Tower and a traditional octagonal pavilion before (L) and during Earth Hour in Seoul March 26, 2011. Earth Hour, when everyone around the world is asked to turn off lights for an hour from 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. REUTERS/Jo Yong-Hak (SOUTH KOREA - Tags: ENERGY ENVIRONMENT) 

Visitors watch Japanese artist Odani Motohiko's video installation "Inferno", at his exhibition "Phantom Limb" at the Mori Art Museum in Tokyo January 21, 2011. Inferno is comprised of eight screens which waterfall images are projected onto, while the floor and ceiling of the octagonal room are mirrored. The artist's solo exhibition goes on till February 27. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: SOCIETY) 

A woman watches Japanese artist Odani Motohiko's video installation "Inferno", at his exhibition "Phantom Limb" at the Mori Art Museum in Tokyo January 21, 2011. Inferno is comprised of eight screens which waterfall images are projected onto, while the floor and ceiling of the octagonal room are mirrored. The artist's solo exhibition goes on till February 27. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: SOCIETY IMAGES OF THE DAY) 

A woman takes a picture of a work titled "Heptagon and Octagon" by Monir Shahroudy Farmanfarmaian of Iran at the 29th Sao Paulo International Biennial September 23, 2010. Some 159 artists from 39 countries are exhibiting their artworks at the biennial, carrying the theme "There is always a cup of sea to sail in a line", according to the press release. The exhibition runs till December 12. REUTERS/Nacho Doce (BRAZIL - Tags: SOCIETY) 

A view of the Ultimate Fighting Championship (UFC) octagon during the UFC tournament in Abu Dhabi April 10, 2010. REUTERS/Mohammed Salem (UNITED ARAB EMIRATES) 

A view of the Ultimate Fighting Championship (UFC) octagon during the UFC tournament in Abu Dhabi April 10, 2010. REUTERS/Mohammed Salem (UNITED ARAB EMIRATES) 

A gold and hard stone centre seconds octagonal watch set with pearls for the Chinese market dated from circa 1800 is displayed during an auction preview at Sotheby's in Geneva November 11, 2009. The watch is estimated to fetch between 48,500 and 77,500 US dollars when it goes under the hammer in Geneva on November 15, 2009. REUTERS/Valentin Flauraud (SWITZERLAND - Tags: ENTERTAINMENT SOCIETY) 

An octagonal inlaid mother-of-pearl lacquer box and cover from China's Yuan dynasty (1279AD-1368AD) is displayed during Christie's auction preview in Hong Kong October 22, 2009. The item is expected to fetch around $2,500,000 at the auction house's Fall sale in the territory between November and December. REUTERS/Bobby Yip (CHINA BUSINESS SOCIETY) 

A reticulated sterling octagonal box with an estimate of $400 is shown at a press preview of items from the auction "The Collection of Barbra Streisand" in Beverly Hills October 12, 2009. Juliens Auctions will offer items collected by singer Barbra Streisand at the auction on October 17 and 18, with proceeds going to The Streisand Foundation. REUTERS/ Fred Prouser (UNITED STATES ENTERTAINMENT) 

Thailand's Princess Maha Chakri Sirindhorn walks out from the balcony of Adalaj Vav, an intricately carved, five level octagonal step-well complex built in the 14th century, during her visit to the old and historical walled city in the western Indian city of Ahmedabad March 7, 2007. Princess Sirindhorn is in India for a five-day visit. REUTERS/Amit Dave (INDIA) 

Japan's Takuro Miuchi (L) is tackled by Hong Kong's Ricky Cheuk during their World Cup 2007 Asian qualifying rugby match in Hong Kong November 18, 2006. EDITORIAL USE ONLY REUTERS/Garrige Ho/Octagon Handout (CHINA) 

Japan's Philip O'Rally (L) is tackled by Hong Kong's Ricky Cheuk during their World Cup 2007 Asian qualifying rugby match in Hong Kong November 18, 2006. EDITORIAL USE ONLY REUTERS/Garrige Ho/Octagon Handout (CHINA) 

Japan's Samurai Vatuvei (L) is tackled by an unidentified Hong Kong player during their World Cup 2007 Asian qualifying match in Hong Kong November 18, 2006. EDITORIAL USE ONLY REUTERS/Garrige Ho/Octagon Handout (CHINA) 

Nick Diaz and Josh Neers fight in the octagon during their Ultimate Fighting Championship welterweight bout at UFC 62 at Mandalay Bay in Las Vegas, Nevada August 26, 2006. REUTERS/Tiffany Brown (UNITED STATES) 

Wes Combs is checked by the referee and octagon doctor after he tapped out in the first round against Wilson Gouveia during their Ultimate Fighting Championship match at UFC 62 at Mandalay Bay in Las Vegas, Nevada August 26, 2006.
REUTERS/Tiffany Brown (UNITED STATES) 

The Ultimate Fighting Championship octagon girls wear athletic bikinis instead of the traditional rhinestone studded string bikinis worn at boxing events, seen here at UFC 62 at Mandalay Bay in Las Vegas, Nevada August 26, 2006.
REUTERS/Tiffany Brown (UNITED STATES) 

Ultimate fighting championship octagon girl and host of the UFC All Access television show, Rachelle Leah announces the third round of the main event in UFC 62 at Mandalay Bay in Las Vegas, Nevada August 26, 2006.
REUTERS/Tiffany Brown (UNITED STATES) 

The Ultimate Fighting Championship's light heavyweight champion Chuck "The Iceman" Liddell makes his way to the octagon for his main event fight against number one contender Renato "Babalu" Sobral in UFC 62 at Mandalay Bay in Las Vegas, Nevada August 26, 2006.
REUTERS/Tiffany Brown (UNITED STATES) 

The newly-conserved original presentation model of the World Trade
Center now on display at the Octagon Museum in Washington, September
10, 2003. The model will be the centerpiece of a new World Trade Center
exhibit along with original architectural photographs. REUTERS/Larry
Downing

LSD 

Onlookers view the newly-conserved original presentation model of the
World Trade Center now on display at the Octagon Museum in Washington,
September 10, 2003. The model will be the centerpiece of a new World
Trade Center exhibit along with original architectural photographs.
REUTERS/Larry Downing

LSD 

U.N. Secretary General Kofi Annan (C) looks at the octagonal dining room of Nero's Imperial Golden Palace with Italian Culture Minister Giovanna Melandri (L) and Italian Prime Minister Massimo D'Alema during their visit to the ancient Roman Palace April 5. Annan said on Wednesday the world could still save people from a devastating famine in the Horn of Africa provided it acted now.

PC/FMS