Geometry

Fast trick to find angle

Complement angle - Sum of two angle is 90
Supplement angle - Sum of two angle is 180

Example-1
An Angle is 33 more then its complement. so the measure of the angle is?
As we know complement angle is sum of two angle is 90 so
90 + 33 / 2
123 / 2
61.5

Example-2
An Angle is 78 less then its complement. so the measure of the angle is?
As we know complement angle is sum of two angle is 90 so
90 - 78 / 2
12 / 2
6

Example-3
An Angle is 73 more then its supplement. so the measure of the angle is?
As we know supplement angle is sum of two angle is 180 so
180 + 73 / 2
253 / 2
126.5


Watch Youtube video of geometry for better understanding.