Without trying to frighten you, I have to tell you that there are many different
ones, and I'm afraid that means that you don't know a lot more than one.
If the angles are congruent, they will be less than 360 degrees.
The Vertical Angles Theorem says that a pair of vertical angles are always congruent.
if two angles are supplements of the same angle (or of congruent angles), then the two angles are congruent.
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To show that triangles ABC and DEF are congruent by the AAS (Angle-Angle-Side) theorem, you need to establish that two angles and the non-included side of one triangle are congruent to the corresponding two angles and the non-included side of the other triangle. If you have already shown two angles congruent, you would need to prove that one of the sides opposite one of those angles in triangle ABC is congruent to the corresponding side in triangle DEF. This additional information will complete the criteria for applying the AAS theorem.
if two angles are supplements of congruent angles, then the two angles are congruent.
If the angles are congruent, they will be less than 360 degrees.
The theorem states "If two angles are both supplementary and congruent, then they are right angles."
The Vertical Angles Theorem says that a pair of vertical angles are always congruent.
Yes, because of the base angles theorem converse: If two angles in a triangle are congruent, then the sides opposite the angles are congruent.
If two angles of one triangle are congruent to two angles of another triangle, then the third angles are also congruent.
if two angles are supplements of the same angle (or of congruent angles), then the two angles are congruent.
The isosceles triangle theorem states that if two sides of a triangle are congruent, the angles opposite of them are congruent. The converse of this theorem states that if two angles of a triangle are congruent, the sides that are opposite of them are congruent.
two congruent angles that adds up to 180
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Supplementary Congruency Theorem
The AA similarity theorem states that if two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar. This theorem is based on the Angle-Angle (AA) postulate, which states that if two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar.