dilations

Front

What does the scale factor do in a dilation?

Back

Tells you how much the image grows or shrinks.

Front

If triangle ABC is dilated to produce triangle A'B'C' with a scale factor of 3/4, what is the relationship between the two triangles?

Back

Triangle A'B'C' is a reduction of triangle ABC.

Front

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

Back

(6, 9)

Front

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

Back

¼

Front

Triangle ABC has vertices A (-2, 2), B (2, 4) and C (3, -1). What are the coordinates of A' after a dilation by a scale factor of 2.5?

Back

(-5, 5)

Front

What is a dilation in geometry?

Back

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

Front

What is the center of dilation?

Back

The fixed point in a dilation from which all points are expanded or contracted.

Front

If a scale factor is greater than 1, what type of transformation occurs?

Back

An enlargement.

Front

If a scale factor is less than 1, what type of transformation occurs?

Back

A reduction.

Front

How do you calculate the new coordinates of a point after dilation?

Back

Multiply the original coordinates by the scale factor.