Question

In an $\underline{}$ triangle, each angle has measure $60°$.

Answer 1

The sum of the measure of three angles of triangles is $180°$

By angle sum property we know that,

The sum of .all the angles of a triangle is $180°$.

All angles of an equilateral triangle are equal.

Let each angle be $x°$.

The sum of the three angles of a triangle is $180°$.

$$\begin{gathered} x+x+x=180° \\ 3x=180° \\ x=\frac{180°}{3} \\ x=60° \end{gathered}$$

Therefore, each angle of an equilateral triangle $60°$