Suppose that an angle's supplement is 155°. Find the measure of its complement
To find the measure of the complement of an angle, subtract the angle's measure from 90°.
The supplement of an angle is the angle that when added to the original angle, equals 180°.
So if the supplement of the angle is 155°, then the original angle is:
180° - 155° = 25°
Now, to find the complement of this angle, subtract the original angle from 90°:
90° - 25° = 65°
Therefore, the measure of the complement of the angle is 65°.