Question

find the measure of angles '?' in each of the following.​

Answer 1

Answer:

∠? = 120°

Step-by-step explanation:

In a equilateral triangle, all sides are equal.

∴ ∠A+∠B+∠C = 180                                      (Angle sum property)

Exterior ∠C = ∠A + ∠B  

                   = 60 + 60                                  (Angles in a equilateral are equal)

                   = 120°