SIMILARITY REVIEW

Similarity in geometry refers to the relationship between two shapes that have the same shape but may differ in size. Their corresponding angles are equal, and their corresponding sides are proportional.

The AA (Angle-Angle) similarity criterion states that if two angles of one triangle are equal to two angles of another triangle, then the triangles are similar.

The SAS (Side-Angle-Side) similarity criterion states that if two sides of one triangle are proportional to two sides of another triangle and the included angles are equal, then the triangles are similar.

The SSS (Side-Side-Side) similarity criterion states that if the corresponding sides of two triangles are proportional, then the triangles are similar.

To find a missing side in similar triangles, set up a proportion using the lengths of the corresponding sides of the triangles and solve for the unknown.

If triangle ABC is similar to triangle DEF, then angle A = angle D, angle B = angle E, and angle C = angle F.

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Two triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

A similarity statement is a statement that indicates two figures are similar, often written in the form of 'Triangle ABC ~ Triangle DEF'.

The sides of similar triangles are proportional, meaning the ratios of the lengths of corresponding sides are equal.