What are the measures if all the theee angles of the triangle

What are the measures if all the theee angles of the triangle

if a triangle is equilateral all of this angles always 60 and why

All you are given is a triangle with the bottom and length C/2 and one of the side C

Answer choices a)0 b) 1 c) 2 d) infinitely

I need help with this problem for my geometry homework

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