Prove that if the two arms of an angle are perpendicular to the two arms of another angle, then the angles are either equal or supplementary.

Prove that if the two arms of an angle are perpendicular to the two ar

1.	Prove that if the two arms of an angle are perpendicular to the two arms of another angle, then the angles are either equal or supplementary.
Answer» Prove that if the two arms of an angle are perpendicular to the two arms of another angle, then the angles are either equal or supplementary.