Triangle abc is isosceles.

what is true about the measure of angle b?

it is twice the measure of angle a.
it is twice the measure of angle c.
it is equal to the measure of angle a.
it is equal to the measure of angle c.

we know that

An isosceles triangle is a triangle with two equal sides and two equal angles

so

in this problem we have

AC=AB

∠B=∠C

therefore

the answer is

It is equal to the measure of angle C

oof tough question

step-by-step explanation:

sorry i can't ya : c gl tho

step-by-step explanation: you take each of the numbers and divide by the amount then you take the range