Two angles of a triangle have measures of 28° and 36°. Which of these best describes the sum of the two measures? & Why?

a. acute

b. right

c. obtuse

d. straight

Okay. So as you probably know, an acute angle is less than 90°, a right angle is 90°, an obtuse angle is greater than 90°, and a straight angle is 180°. When you add both of those angles together (28 + 36), you have a sum of 64. 64 < 90. The sum of the two angles makes it an acute angle. The answer is A: acute.