Geometry Unit 4 Practice Test

Front

What postulate proves that triangles are similar?

Back

SSS (Side-Side-Side) Postulate states that if the corresponding sides of two triangles are in proportion, then the triangles are similar.

Front

Similar figures have the same ______ but different ______.

Back

shape; sizes

Front

When a dilation has a scale factor greater than one, what type of transformation is it?

Back

Enlargement.

Front

What scale factor was used to produce the image if the original shape is reduced to half its size?

Back

1/2

Front

In a dilation, what mathematical operation is used with the scale factor?

Back

Multiplication.

Front

What is the definition of similar figures?

Back

Figures that have the same shape but different sizes.

Front

What does the AA postulate state?

Back

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

Front

What is the SSS similarity criterion?

Back

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

Front

What is a dilation in geometry?

Back

A transformation that alters the size of a figure but not its shape.

Front

What happens to the dimensions of a figure when a dilation with a scale factor less than one is applied?

Back

The figure is reduced in size.