Vertical angles are always, by definition, congruent. Note: If the two vertical angles are right angles then they are both congruent and supplementary.
supplementary angles are equal to 180 degrees. so two congruent(same) angles would be 90 degrees!
Not unless the parallelogram is a rectangle. In every parallelogram, consecutive angles are supplementary.
90 degrees is the angle
There's lots of useful things you can discover when parallel lines are cut by a transversal, most of them having to do with angle relationships. Corresponding angles are congruent, alternate interior angles are congruent, same side or consecutive interior angles are supplementary, alternate exterior angles are congruent, and vertical angles are congruent.
Angles that are congruent and supplementary must be right angles.
They are congruent 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.
Vertical angles are always, by definition, congruent. Note: If the two vertical angles are right angles then they are both congruent and supplementary.
They are supplementary
congruent
They can be but not always because supplementary angles add up to 180 degrees.
Give us a break! -- A 3° angle is congruent to another 3° angle, but their sum is only 6° , not 180°. -- Congruent angles are always equal, but supplementary angles don't have to be equal.
Supplementary Congruency Theorem
supplementary angles are equal to 180 degrees. so two congruent(same) angles would be 90 degrees!
Congruent *apex
They can be but not always because supplementary angles add up to 180 degrees.