Question

4. Two of the angles in a triangle have measure of 79° and 81°. Which of the angle measures below

could belong to a triangle that is similar to this triangle?
A) 81 and 80°
B) 81 and 20°
C)79° and 90°
D)79° and 21°

Answer 1

B

Explanation:

Answer 2

B) 81 and 20°

Explanation:

In any triangle, the sum of the measures of the three angles is 180°. Therefore, if two angles in a triangle have measures of 79° and 81°, the third angle must have a measure of 180 - 79 - 81 = 20°. Therefore, the answer is B) 81 and 20°.