Similar triangles are the triangles with the same shape; however one triangle is an enlargement of the other.

lesson notes:05 similar triangles

The tests used for congruent triangles, are actually the similar triangle proofs in the specifuc case of the sides being in the ratio 1:1.

lesson notes:05 similar triangles

The tests for proving the similarity of triangles.

lesson notes:05 similar triangles

Similar triangles use the same tests as congruent triangles. The difference being the ratio of the matching sides.

lesson notes:05 similar triangles

Similar triangles expand on the idea of congruent triangles. With congruence the ratio of sides must be 1:1, whereas similarity the sides could be in any ratio.

lesson notes:05 similar triangles