Dilations Review 2024

Front

What operation do dilations use?

Back

Multiplication

Front

What is the image of point B (4,9) under a dilation with center at the origin and scale factor of 2?

Back

B' (8, 18)

Front

If triangle CAT is formed by dilating triangle DOG, what is true about their relationship?

Back

CAT ∼ DOG

Front

If triangle ABC is reduced to triangle A'B'C' with P as the center of dilation, what is true about their sides?

Back

Front

What happens to triangle XYZ when transformed to triangle X'Y'Z' with the rule (x,y) → (ax, ay)?

Back

Front

What is the definition of dilation in geometry?

Back

A transformation that produces an image that is the same shape as the original, but is a different size.

Front

What is the scale factor in a dilation?

Back

The ratio of the distance from the center of dilation to a point on the image and the distance from the center of dilation to the corresponding point on the pre-image.

Front

How does a dilation affect the angles of a shape?

Back

The angles remain the same; dilations preserve angle measures.

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 dilation has a scale factor greater than 1, what happens to the shape?

Back

The shape enlarges.