Unit 3 Test Review ~ Similar Figures

Front

What is the definition of similar figures?

Back

Similar figures are shapes that have the same shape but may differ in size. Their corresponding angles are equal, and their corresponding sides are in proportion.

Front

What is the scale factor in dilation?

Back

The scale factor is a number that describes how much a figure is enlarged or reduced during a dilation. It is the ratio of the lengths of corresponding sides of the original figure to the dilated figure.

Front

How do you determine if two triangles are similar using the AA criterion?

Back

Two triangles are similar by the AA criterion if two angles of one triangle are equal to two angles of another triangle.

Front

What does SSS stand for in triangle similarity?

Back

SSS stands for Side-Side-Side. It is a criterion for triangle similarity that states if the corresponding sides of two triangles are in proportion, then the triangles are similar.

Front

What does SAS stand for in triangle similarity?

Back

SAS stands for Side-Angle-Side. It is a criterion for triangle similarity that states if two sides of one triangle are in proportion to two sides of another triangle and the included angles are equal, then the triangles are similar.

Front

What is the formula for solving proportions?

Back

The formula for solving proportions is a/b = c/d, where a, b, c, and d are numbers. Cross-multiplication can be used to solve for an unknown.

Front

How do you perform a dilation on a point?

Back

To perform a dilation on a point, multiply the coordinates of the point by the scale factor. For example, if point (x, y) is dilated by a scale factor of k, the new point will be (kx, ky).

Front

What is the result of dilating the point (4, 6) by a scale factor of 2?

Back

The result of dilating the point (4, 6) by a scale factor of 2 is (8, 12).

Front

What is the relationship between the angles of similar figures?

Back

The corresponding angles of similar figures are equal.

Front

What is the relationship between the sides of similar figures?

Back

The corresponding sides of similar figures are in proportion.