Congruent Triangles
Congruent means “exactly the same size and shape.”
Triangles are congruent when all their corresponding sides and angles are congruent.
SSS stands for “side-side-side.” Two triangles are congruent by SSS if they have the same lengths of sides in the same order.
SAS stands for “side-angle-side.” Two triangles are congruent by SAS if they have the same length of two sides and the same measure of the angle between them.
ASA stands for “angle-side-angle.” Two triangles are congruent by ASA if they have the same measure of two angles and the same length of the side between them.
Remember, when we say two triangles are congruent, it means they are exactly the same size and shape, just like when we use a mirror to reflect an object, we get the exact same object in the mirror.
