An angle in a triangle measures 138 °. The other two angles are congruent. Enter and solve an equation to find the x measure of

Question

4 years ago

13

the congruent angles. An equation is _______ = 180. Angles congruent with each measure ________

1 answer:

Juli2301 [7.4K] · Answer 1 · 2021-12-30T18:16:14+03:00

5 0

Hey there! I"m happy to help!

The interior angles of a triangle add up to 180. We have 2 angles that have a value of x, so 2x+138=180.

We subtract 138 from both sides.

2x=42

We divide both sides by 2

x=21.

Have a wonderful day! :D