Dilation and Area of Shapes

Which transformation results in a figure that is similar to the original figure but has a greater area?

• a dilation of triangle QRS by a scale factor of 0.25

• a dilation of triangle QRS by a scale factor of 0.5

• a dilation of triangle QRS by a scale factor of 1

• a dilation of triangle QRS by a scale factor of 2

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

The segment AB is dilated to create the segment A'B'. What are the coordinates of the center of the dilation?

• ( 5, 7 )

• ( 8, 1 )

• ( 0, 4 )

• ( -1, 4 )

Tags

CCSS.8.G.A.3

In the diagram shown below quadrilateral ABCD is dilated from the origin.

What scale factor was used for the dilation?

• 0.5

• 1.5

• 2

• 1

Tags

CCSS.8.G.A.3

If the triangle at the right were to be dilated using a scale factor of 1/2 , which is the only triangle below that could represent the transformed image?

• A

• B

• C

• D

Tags

CCSS.8.G.A.3

A rectangle has an area of 30 cm². The rectangle is dilated with a scale factor of 3. What is the area of the new rectangle?

• 30 cm²

• 90 cm²

• 270 cm²

• impossible to know

Tags

CCSS.7.G.A.1

The scale factor for this dilation is:

Mathematical Equivalence

ON

Tags

CCSS.8.G.A.3

The only transformation that changes the length of sides is dilation.

• True

• False

Tags

CCSS.8.G.A.3

A rectangle ABCD is dilated from point O to create the rectangle A’B’C’D’. Given AB = 4 cm, A’B’ = 8 cm, and the area of ABCD = 10 cm2 determine the ratio of the areas between the two similar shapes.

• 2/1

• 4/1

• 8/1

• 16/1

Tags

CCSS.7.G.A.1

The smaller triangle is transformed to create the larger triangle. Which of these is the scale factor of the dilation centered at the point (0, 0)?

• 4

• 2

• 1

• 1/2

Tags

CCSS.HSG.CO.A.2

Figure A′B′C′D′F′ is a dilation of figure ABCDF by a scale factor of ½ ​​. The dilation is centered at (–4, –1). Which statement is true?

• A

• B

• C

• D

Tags

CCSS.8.G.A.3