The center points of three enclosures at Göbekli Tepe form a near-perfect triangle whose sides each measure approximately 63 feet.
Notes on verification
Confirmed by peer-reviewed study (Haklay & Gopher, Cambridge Archaeological Journal, 2020) and corroborated by multiple independent science journalism outlets reporting the same 19.25m/63ft equilateral triangle finding.
Sources
- Did Geometry Guide the Construction of the World's Oldest ... (smithsonianmag.com)
- https://www.cambridge.org/core/journals/cambridge-archaeological-journal/article/geometry-and-architectural-planning-at-gobekli-tepe-turkey/2CBAF416E33AFE6496B73710A2F42FF9 (cambridge.org)
- https://www.ancient-origins.net/news-history-archaeology/gobekli-tepe-geometry-0013627 (ancient-origins.net)