Question

Two angles are equal and supplementary to each other. Find them.

Answer 1

both the angles are 90 degree as the sum of supplementary angles is 180. if i let one angle be x, therefore
x+x=180
2x=180
x=180/2
90

Answer 2

they are equal so let them be 'x'.
2x=180,since they are supplementary.
therefore each angle is 90