No. An angle can have only one angle!
Vertical angles
If the parallelogram is a square then angle A is congruent to angle B ,is congruent to angle C. AB is congruent to BC is congruent to CD.
Those are "vertical" angles, even if there's nothing vertical about them.
Angle Angle Side is a method one can use to prove that two triangles are congruent. Basically, if any two pairs of angles and the side between these angles are congruent, then the triangles are congruent as well.
Such angles are called vertically opposite angles.
Vertical angles
If the parallelogram is a square then angle A is congruent to angle B ,is congruent to angle C. AB is congruent to BC is congruent to CD.
they are congruent: exactly equal
Those are "vertical" angles, even if there's nothing vertical about them.
Yes they are. Or they could have three pairs of congruent sides, or they could have one pair of congruent angles and two pairs of sides. As far as a triangle goes, if you have at least three pairs of congruent sides or angles they are congruent. This answer is wrong. The triangles are only similar. For congruent trisngles we have the following theorems = Side - side - side, Side - Angle - side , Angle - angle - side, Right triangle - hypotenuse - side.
Angle Angle Side is a method one can use to prove that two triangles are congruent. Basically, if any two pairs of angles and the side between these angles are congruent, then the triangles are congruent as well.
Actually, It is this. Question: Angle 1 and 4 are called ___ angles? Answer: Supplementary
Corgent Angles
Oh, dude, proving vertical angles are congruent? That's like proving water is wet. Helena just needs to show that those angles are opposite each other when two lines intersect. It's like saying, "Hey, these angles are equal because they're like mirror images of each other." Easy peasy lemon squeezy.
Such angles are called vertically opposite angles.
Charles is correct
Given two intersecting lines, the two angles opposite each other have the same measure and are congruent.