Geometry

Congruent

Two shapes are congruent if they are identical in size and shape — one can be mapped to the other by translation, rotation or reflection.

Definition

Triangles are congruent if any of: three sides match (SSS); two sides and the included angle (SAS); two angles and a corresponding side (ASA or AAS); right angle, hypotenuse and one side (RHS).

Used in these topics

Congruence and similarity →

Related terms

Similar

Two shapes are similar if they have the same shape but possibly different sizes — one is an enlargement of the other.

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