Question

What is the measure of < B? A. Cannot be determined B. 60° C. 25° D. 75°

Answer 1

Heya!

Here is your answer:

The measure of all angles are 60°.

Here,

triangle ABC is an equilateral triangle (all sides are equal)

so, Its all angle measure same.

<A + <B + <C = 1800°

let <B = x

x+x+x =180°

3x = 180

x= 60°

Hence
<B = 60°