Answer:
in this case you've not been given the measure of any angle but you've been given the measure of every line and you see that they are the same so this means that it is an equilateral triangle and you know that each side is equal so we will label all the angles x and say x + x + x is equals to 180 3x is equals to 180 / 3 to get x x is equals to 60 and that's the answer
