An equilateral triangle is inscribed in a circle of radius 6 cm
Mixtilinear incircles of a triangle - Wikipedia
Illustration Showing How Construct Square Inscribed Stock Vector (Royalty Free) 1677162421
isosceles triangle
Construct Equilateral Triangle - MathBitsNotebook (Geo)
Art of Problem Solving
Perpendicular Bisectors
Construct Equilateral Triangle - MathBitsNotebook (Geo)
Constructing Equilateral Triangle INSIDE a Circle