Similarity Test Review

Front

What is the definition of similar polygons?

Back

Similar polygons are polygons that have the same shape but may differ in size. Their corresponding angles are equal, and the lengths of their corresponding sides are proportional.

Front

What is a scale factor in geometry?

Back

A scale factor is a number that scales, or multiplies, some quantity. In the context of similar figures, it is the ratio of the lengths of corresponding sides of two similar figures.

Front

How do you find the scale factor from two similar polygons?

Back

To find the scale factor from two similar polygons, divide the length of a side of the smaller polygon by the length of the corresponding side of the larger polygon.

Front

Back

x = 10.5

Front

If two triangles are similar, what can be said about their corresponding angles?

Back

If two triangles are similar, their corresponding angles are equal.

Front

Back

Front

What is the relationship between the sides of similar triangles?

Back

The lengths of corresponding sides of similar triangles are proportional.

Front

Dilate the point M(2,3) by a scale factor of 2. What are the new coordinates?

Back

M'(4,6)

Front

What is the formula for dilating a point (x,y) by a scale factor k?

Back

The new coordinates after dilation are (kx, ky).

Front

Back