It's when they're congruent and equal 180 degrees.
if two angles are supplements of the same angle (or of congruent angles), then the two angles are congruent.
Angles that are congruent and supplementary must be right angles.
No, a pair of angles that are supplementary will always have a sum of 180 degrees, while a pair of angles that are congruent will have the same measure. Therefore, it is not possible for a pair of angles to be both supplementary and congruent.
congruent
Congruent *apex
Supplementary Congruency Theorem
The theorem states "If two angles are both supplementary and congruent, then they are right angles."
if two angles are supplements of the same angle (or of congruent angles), then the two angles are congruent.
Angles that are congruent and supplementary must be right angles.
They are supplementary
No, a pair of angles that are supplementary will always have a sum of 180 degrees, while a pair of angles that are congruent will have the same measure. Therefore, it is not possible for a pair of angles to be both supplementary and congruent.
They are congruent angles
congruent
Vertical angles are always, by definition, congruent. Note: If the two vertical angles are right angles then they are both congruent and supplementary.
Congruent *apex
asa theorem
The Opposite Sides Parallel and Congruent Theorem states that if a quadrilateral has a pair of opposite sides that are parallel and congruent, then the quadrilateral is a parallelogram.