Question

Write the supplement of an angle of measure 2y degree

Answer 1

Sum of two supplementary angles is 180 degrees.
Let us conside amother angle as x.
2y+x=180
2y=180-x
y=180-x/2
y=90-x/2

Answer 2

Solution:

The supplementary angle of 2y degrees is $(180-2y)^{\circ}$

Explanation:

If the sum of two angles is 180 degrees then the two angles are supplement of each other.

If x and y are  supplement of each other then we have

$x+y=180^{\circ}$

We have to find the supplement of the angle 2y degrees. Hence, we must subtract it with 180 to find the same.

Therefore, the supplementary angle of 2y degrees is given by

$(180-2y)^{\circ}$