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 Related Terms
 Congruent Triangles:  Triangles that have the same size and shape.
Side-Angle-Side (SAS-Similarity): If the lengths of two sides of a triangle are multiples of two corresponding sides of another triangle (i.e. they are in proportion), and the included angles are congruent, then the triangles are similar.
Congruent: Having the same size, shape and measure.
Angle-Angle-Side (AAS): If two angles and a non-included side of one triangle are congruent to two angles and the corresponding non-included side of a second triangle, then the two triangles are congruent.
Angle-Side-Angle (ASA): If two angles and the included side of a triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.
Corresponding Angles: Angles that have the same relative positions in geometric figures.
Corresponding Sides: Sides that have the same relative positions in geometric figures.
Side-Side-Side (SSS): A congruence property that states if three sides of a triangle are congruent, respectively, to the three sides of another triangle, then the two triangles are congruent.