Question

A triangle has two angles that are 68 degrees and 78 degrees. What is the third angle

Answer 1

36°

Explanation:

The sum of interior angles in a triangle is equal to 180°.

Two of the angle measures are given already so all we need to do is to add up the measures.

• Let x represent the missing angle:

68 + 78 + x = 180

• Add measures.

144 + x = 180

• Subtract 144 from both sides.

x = 36°