Question

Which set of angle measures can be the angle measures of a triangle?

A 31°, 60°, 90°31°, 60°, 90°

B 18.4°, 32.6°, 129°18.4°, 32.6°, 129°

C 125°, 25°, 40°125°, 25°, 40°

D 10°, 120°, 40°

Answer 1

Explanation:

There are two conditions that need to be in place.

• The sum of the angles must equal 180
• There must be exactly 3 angles.

A has too many angles. The answer is not A.

B same as A

C same as A

D doesn't add to 180. Not D

You have no answer unless there is another choice.