Question

What is the measure of /_B, in degrees? (Picture below) please help!

Answer 1

What's angle C?

Answer 2

Isn't it 74, since the sides are the same.

Answer 3

yes. and do you know the total of all the angles in a triangle?

Answer 4

Not sure :\

Answer 5

In every triangle all 3 angles add up to 180

Answer 6

Okay... after I know they add up to 180, what do I do?

Answer 7

subtract.
a + b + c = 180
b = 180-a-c

Answer 8

I got A.

Answer 9

Is it correct?

Answer 10

no, a and c are both 74, so
\[B=180-74-74\]