Unit 8 Words

Ratio

A comparison of two quantities.

Proportion

A statement that two ratios are equal.

AA Similarity Postulate

If two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar.

SAS Similarity Theorem

If an angle of one triangle is congruent to an angle of a second triangle, and the sides including the two angles are proportional, then the triangles are similar.

SSS Similarity Theorem

If the corresponding sides of two triangles are proportional, then the triangles are similar.

Geometric Mean

Any two positive numbers a and b such that a/x = x/b.