Unit 8 Vocabulary

Front

Similar Figures

Back

Figures that have the same shape but may differ in size.

Front

Similarity Transformation

Back

A transformation that produces similar figures, often involving dilation.

Front

Dilation

Back

A transformation that enlarges or reduces a figure by a scale factor relative to a center of symmetry.

Front

Center of Symmetry

Back

A point that is equidistant from all corresponding points of a figure and its image after a transformation.

Front

Scale Factor

Back

A number which scales, or multiplies, some quantity. In geometry, it is used to determine the degree of enlargement or reduction in a dilation.

Front

AA Similarity Theorem

Back

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

Front

SSS Similarity Theorem

Back

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

Front

SAS Similarity Theorem

Back

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

Front

Triangle Proportionality Theorem

Back

If a line parallel to one side of a triangle intersects the other two sides, then it divides those sides proportionally.

Front

Three Parallel Lines Theorem

Back

If three parallel lines intersect two transversals, then they divide the transversals proportionally.