Respuesta :

This is an equilateral triangle so it must also be equiangular. A triangle must have 180 degrees and has three angles so 180/3 = 60. Each angle is 60 degrees.
This is a equilateral triangle (not the same side measurements.

So the angles should be the same measurements too

180/3 = 60

A. 60° should be your answer

hope this helps