Question

Write the measure of the supplement of the angle given below.

15^°

Answer 1

Let the measure of the supplementary angle be x.

15^° + x = 180^°

15^° + x − 15^° = 180^° − 15^°   ...(Subtracting 85 from both sides)

∴ x = 165^°

Hence, the measure of the supplement of an angle of measure 15^° is 165^°.