Dilations Similarity

What happens to a figure when it is dilated by a scale factor of a positive integer?

• it becomes smaller

• it becomes larger

• it stays the same

Tags

CCSS.8.G.A.3

Jimmy and his sister each bought a plot of rectangular land to build a house. Jimmy's land was 150 ft by 100 ft. His sister's land was 75 ft by 50 ft. What is the scale factor of Jimmy's land compared to his sister's?

• 1/2 the size

• 2 times the size

• 2/3 the size

• 3 times the size

Tags

CCSS.7.G.A.1

Which of the following rules represents a dilation?

• (x, y) → (x, 3y)

• (x, y) → (3x, 3y)

• (x, y) → (x - 4, y - 3)

• (x, y) → (.5x, .4y)

Tags

CCSS.8.G.A.3

Similar figures have the same ______ but different ______. 

• measure; shapes

• sizes; shapes

• value; measures

• shape; sizes

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

In a dilation what mathematical operation is used with the scale factor?

• addition 

• subtraction 

• multiplication 

• division 

Tags

CCSS.8.G.A.3

Triangle ABC is dilated using the algebraic rule (x, y) --> (0.75x, 0.75y). Is triangle A'B'C' an enlargement or reduction of the original triangle?

• Enlargement because the scale factor is less than one. 

• Reduction because the scale factor is less than one. 

• Neither

• Cannot Be Determined

Tags

CCSS.8.G.A.3

Using the algebraic rule (x, y) --> (2.5x, 2.5y), what would be the coordinates of C' if point C is located at (-10, 8).

• C'(-4, 3.2)

• C'(-25, 20)

• C'(-25, 8)

• C'(-4, 20)

Tags

CCSS.8.G.A.3

What angle is corresponding to angle D?

• A

• B

• C

• F

Tags

CCSS.HSG.SRT.A.2

If ABCD is similar to EFGH, which proportion is true?

• 
• 
• 
• 

Tags

CCSS.HSG.SRT.A.2

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

• (1,-2)

• (-6,-15)

• (-2/3,-5/3)

• (-5,-8)

Tags

CCSS.8.G.A.3