Warm Up 1/28/21

A scale factor of 1/2 reduces a figure.

• True

• False

Tags

CCSS.8.G.A.3

When the dilation has a scale factor greater than one, the dilation is an enlargement.

• True

• False

Tags

CCSS.8.G.A.3

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True

• False

Tags

CCSS.8.G.A.3

Tags

CCSS.8.G.A.3

• enlargement

• reduction (shrink)

Tags

CCSS.8.G.A.3

A polygon is graphed on a coordinate grid with (x,y) representing the location of a certain point on the polygon. The polygon is transformed using the rule (x, y)→(ax, ay). Which statement must be true?

• If a is greater than 1, the image of the polygon is congruent to the polygon.

• If a is between 0 and 1, the image of the polygon is congruent to the polygon.

• If a is greater than 1, the image of the polygon is smaller than the polygon.

• If a is between 0 and 1, the image of the polygon is smaller than the polygon.

Tags

CCSS.8.G.A.3

If the triangle ABC is dilated using a scale factor of k=2, what will be the coordinates of A' after the transformation?(Click the picture to zoom in on it)

• A'(1.5, -1.5)

• A' (-6, 6)

Tags

CCSS.8.G.A.3

Click image to enlarge

• A

• B

• C

• D

Tags

CCSS.8.G.A.3

Click image to enlarge

• A

• B

• C

• D

Tags

CCSS.8.G.A.3

Click image to enlarge

• A

• B

• C

• D

Tags

CCSS.8.G.A.3