Math 8: 2.1-4 Review, Dilations

Front

If two figures are similar, the corresponding angles are...

Back

Congruent

Front

If two figures are similar, the corresponding sides are ______________.

Back

Proportional

Front

AB = 4 and AC = 16. If B is dilated with a center at A, what is the scale factor?

Back

4

Front

To dilate point C from a center of P with a scale factor of 3, from P go _______.

Back

down 3, right 9

Front

When a dilation has a scale factor greater than one, the dilation is an enlargement. True or False?

Back

True

Front

What is the definition of dilation in geometry?

Back

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

Front

What happens to the angles of a figure when it is dilated?

Back

The angles remain congruent.

Front

What is the scale factor in a dilation?

Back

The ratio of the length of a side of the image to the length of the corresponding side of the original figure.

Front

If a figure is dilated by a scale factor of 1/2, what happens to its size?

Back

The figure is reduced to half its original size.

Front

If two similar triangles have sides in the ratio 2:3, what is the scale factor from the smaller triangle to the larger triangle?

Back

3/2 or 1.5