Dilation

Front

Definition: The figure before a transformation has occurred.

Back

Pre-image

Tags

CCSS.HSG.CO.A.2

Front

Choose the correct scale factor for dilation.

Back

2

Tags

CCSS.8.G.A.3

Front

State the coordinate of the image of the point B (-10,-6) under a dilation with center at the origin with scale factor k = 1/2.

Back

(-5,-3)

Tags

CCSS.8.G.A.3

Front

A triangle has vertices (2,0), (3,-1), and (-2,-5). If dilated by a scale factor of 3 with the origin as the center, what are the coordinates of the vertices of the image?

Back

(6,0), (9,-3), (-6,-15)

Tags

CCSS.8.G.A.3

Front

Triangle CAT has coordinates C (4,8), A (6,10), and T (6,4). Where is A' after a dilation of scale factor of 1/2?

Back

(3,5)

Tags

CCSS.8.G.A.3

Front

What is the definition of dilation in geometry?

Back

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

Tags

CCSS.8.G.A.3

Front

If a point (x,y) is dilated by a scale factor k, what is the new coordinate?

Back

(kx, ky)

Tags

CCSS.8.G.A.3

Front

What is the scale factor in a dilation?

Back

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

Tags

CCSS.8.G.A.3

Front

How does dilation affect the area of a figure?

Back

The area is multiplied by the square of the scale factor.

Tags

CCSS.8.G.A.3

Front

If a triangle is dilated by a scale factor of 1/3, what happens to its size?

Back

The triangle becomes one-third of its original size.

Tags

CCSS.8.G.A.3