4c Congruency Review

Front

What does AAS stand for in triangle congruency?

Back

AAS stands for Angle-Angle-Side, a rule used to prove that two triangles are congruent if two angles and the non-included side of one triangle are equal to the corresponding parts of another triangle.

Front

What is the definition of congruent triangles?

Back

Congruent triangles are triangles that are identical in shape and size, meaning their corresponding sides and angles are equal.

Front

What does SAS stand for in triangle congruency?

Back

SAS stands for Side-Angle-Side, a rule used to prove that two triangles are congruent if two sides and the included angle of one triangle are equal to the corresponding parts of another triangle.

Front

What does SSS stand for in triangle congruency?

Back

SSS stands for Side-Side-Side, a rule used to prove that two triangles are congruent if all three sides of one triangle are equal to the corresponding sides of another triangle.

Front

What does HL stand for in triangle congruency?

Back

HL stands for Hypotenuse-Leg, a rule used to prove that two right triangles are congruent if the hypotenuse and one leg of one triangle are equal to the corresponding parts of another triangle.

Front

How many degrees are in a right angle?

Back

A right angle measures 90 degrees.

Front

What is the difference between SSA and congruency?

Back

SSA (Side-Side-Angle) does not guarantee triangle congruency because it can lead to ambiguous cases where two different triangles can be formed.

Front

What is the Angle-Angle (AA) similarity criterion?

Back

The AA criterion states that if two angles of one triangle are equal to two angles of another triangle, the triangles are similar, but not necessarily congruent.

Front

What is the purpose of triangle congruency rules?

Back

Triangle congruency rules are used to determine whether two triangles are congruent, which is essential in solving geometric problems and proofs.

Front

Can two triangles be congruent if only one side is known?

Back

No, knowing only one side is not sufficient to prove congruency; at least two sides and the included angle or two angles and a side must be known.