Dilations, Triangle Midsegment, Triangle Proportionality

Which is true about the scale factor when a figure is enlarged?

• The scale factor is zero.

• The scale factor is 1.

• The scale factor is larger than 1.

• The scale factor is smaller than 1.

Tags

CCSS.8.G.A.3

Triangle ABC is dilated to produce triangle A'B'C' with scale factor 3/4 . Which describes the relationship between the two triangles?

• Triangle A'B'C' is an enlargement of triangle ABC

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

• Triangle A'B'C' is a mirror image of triangle ABC

Tags

CCSS.8.G.A.3

Triangle PQR is similar to triangle DEF shown. Which describes the relationship between the corresponding sides of the two triangles?

• 
• 
• 
• 

Tags

CCSS.HSG.SRT.A.2

• A

• B

• C

• D

Tags

CCSS.HSG.SRT.A.2

Which of the following is the algebraic representation for a dilation?

• (x, y) → (x, 3y)

• (x, y) → (3x, 3y)

• (x, y) → (x, y - 3)

• (x, y) → (.5x, .4y)

Tags

CCSS.8.G.A.3

• A

• B

• C

• D

Tags

CCSS.HSG.CO.A.2

Rectangle ABCD has a length of 6 and a height of 5. It is dilated by a scale factor of 3.

What is true about the perimeter of A'B'C'D', the new rectangle?

• The perimeter of A'B'C'D' is the same as the perimeter of ABCD

• The perimeter of A'B'C'D' is the 3 times larger than the perimeter of ABCD

• The perimeter of A'B'C'D' is the 6 times larger than the perimeter of ABCD

• The perimeter of A'B'C'D' is the 9 times larger than the perimeter of ABCD

Tags

CCSS.7.G.A.1

A triangle has a perimeter of P units. The triangle is dilated by a scale factor of 1/2.

Which expression could represent the perimeter of the new shape?

• 2P units

• 4P units

Tags

CCSS.7.G.A.1

Jane's garden is a 2 ft x 3 ft rectangle. If she increases it by a scale factor of 3, what is the new area of her garden?

• 72 square feet

• 18 square feet

• 36 square feet

• 54 square feet

Tags

CCSS.7.G.A.1

A rectangle is dilated by a scale factor of 2.

What happens to the area?

• doubles

• triples

• quadruples

• not enough information

Tags

CCSS.7.G.A.1