Question

how can you use the Isosceles Triangle Theorem to prove that all equilateral triangles are also equiangular?

Answer 1

If a triangle has 2 equal sides, the angles opposite those angles are also equal

Answer 2

so if you apply that rule to any 2 sides on a Equilateral triangle, it holds true

A=B amd A=C so B=C

Answer 3

Equilateral and Equiangular