Question

Use the Triangle Angle Sum Theorem to find the measure of the third angle if the first and second angle measure 63° and 40° .(1 point) °

Answer 1

A triangle has two angles measuring 40° and 65° . Use the Triangle Angle Sum Theorem to find the measure of the third angle.(1 point)

Answer 2

The Triangle Angle Sum Theorem states that the sum of all three angles in a triangle is always 180°.

Therefore, to find the measure of the third angle, we need to subtract the sum of the first and second angle from 180°.

Let the measure of the third angle be x°.

180° - (63° + 40°) = 180° - 103° = 77°

Therefore, the measure of the third angle is 77°.