File:Isosceles-right-triangle.svg - Wikipedia
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Description
What are the characteristics of the triangle [math](77+rac{1}{7})° - (77+rac{1}{7})° - (25+rac{5}{7})°[/math] , does it have any special properties? - Quora
Altitude (triangle) - Wikiwand
Isosceles triangle - Wikipedia
Quadrilateral hierarchy –
Geometry and Trigonometry: Solving Triangles (AI's Insights on Mathematics #5–3), by Sandy Y. Greenleaf
Integer triangle - Wikiwand
File:Isosceles right triangle.svg - Wikipedia
Trigonometry
Fotpunkt, pedal Triangle, law Of Sines, Right triangle, Pedal, meter, definition, Mathematics, Wikimedia Commons, wikipedia
三角剖分 - OI Wiki
Quadrilateral hierarchy –
File:Ptolemy Pentagon2.svg - Wikipedia
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