Question

What is the measure of ∠A?

http://secure.starssuite.com/files/geo2010/Geom_10S_Fig04.jpg

A. 35
B. 55
C. 70
D.110

Answer 1

First know what the inside sum of the angles is supposed to be

Answer 2

Do you know what that is?

Answer 3

no:/

Answer 4

Okay well the interior angles are supposed to equal 180, because you have two congruent sides, the two angles left over are going to be congruent. This is how I did it

180-70= 110
110/2=55

so its 55
You can check that by adding 55+55+70=180

Answer 5

okay, thank you so much:)

Answer 6

No problem:)