Question

The first two angles in a triangle are 100 degrees and 70 degrees. What does the third angle have to be?

A. 1 Degrees
B. 10 Degrees
C. 100 Degrees
D. 180 Degrees

Answer 1

B. 10 Degrees.

Explanation:

The degrees of the angles on a triangle must have a sum of 180 degrees.

100 + 70 = 170.

180 - 170 = 10.

This is how you know 10 degrees is what the third angle must be.

100 + 70 + 10 = 180.

So, B is your answer.

Answer 2

180 degrees

Explanation:

because 52 degrees + 104 degrees + 24 degrees = 180 degrees