Question

Triangle DEF is an isosceles triangle.

DE = EF
m 2F = 13°
What is E?

A) 13
B) 64
C) 84
D) 154

Answer 1

Its D

Explanation:

I took test, hard to explain

Answer 2

<E = 154°

Explanation:

As we can see it is an isosceles triangle so

base angles are equal Then

13° + 13° + < E = 180° < Being sum of angles of triangle >

<E = 180° - 13° - 13°

Therefore <E = 154°