Question

In a equilateral triangle, all the three sides of the triangle are equal and each angle measuresdegree

Answer 1

Equilateral triangles are those triangles which have all of their sides equal.
Hence, Angles of the triangle will be also equal.
Here, $m\angle A=m\angle B=m\angle C$
$AB=BC=CA$

We know: sum of interior angles of a triangle is ${180}^o$
$\therefore m\angle A+m\angle B+m\angle C={180}^{o}3\angle A={180}^o\Rightarrow \angle A={60}^o$

$\Rightarrow m\angle A=m\angle B=m\angle C={60}^o$