15+Similar+Triangles+(AA,+SAS,+SSS)

When Two Triangles are similar, it means that they do not have the same side lengths, but they have the same angle measures. In other words, they are the same shape. The Formulas used are SSS, AA, and SAS, note that a triangle can be Congruent and Similar, in fact, all triangles that are congruent are similar. To actually find out if the triangles are similar you have to use one of those formulas, so you just take the information that you are given about the triangle and plug it in.

SSS- If 3 sides of a triangle are congruent to 3 sides of another triangle, the triangles are congruent



AAS- If 2 angles and the non-including side of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent

SAS- If 2 sides and the included angle of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent





Helpful Links: http://www.gcseguide.co.uk/similar_triangles.htm http://www.mathwarehouse.com/geometry/similar/triangles/