Rotations and Dilations Review

If I rotate a trapezoid

90⁰ counterclockwise,

and its in quadrant 3,

which quadrant would it move to?

• Quadrant 1 (I)

• Quadrant 2 (II)

• Quadrant 3 (III)

• Quadrant 4 (IV)

Tags

CCSS.8.G.A.1

CCSS.8.G.A.3

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½
• ¼
• 4
• 2

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

What is the definition of dilation,  in mathematical terms?

• to make larger or smaller
• to only make larger
• all of the above
• to only make smaller

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Triangle C is rotated 180° with the origin as the center of rotation to create a new figure. Which triangle shows the new location?

• A

• B

• C

• D

Tags

CCSS.8.G.A.1

CCSS.8.G.A.2

CCSS.8.G.A.3

A transformation that “turns” a figure about a fixed point at a given angle and a given direction.

• reflection
• translation
• rotation
• dilation

Tags

CCSS.8.G.A.1

CCSS.8.G.A.2

CCSS.8.G.A.3

A triangle has vertices with coordinates (2,0), (3, -1) and (-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 the vertices of the image?

• (5,3), (6,2), (1,-2)
• (6,0), (9,-3), (-6,-15)
• (2/3,0), (1,-1/3), (-2/3,-5/3)
• (-1,-3), (0,-4), (-5,-8)

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Is the dilation a reduction or enlargement if the scale factor is 1/5?

• enlargement

• reduction

Tags

CCSS.8.G.A.3

Is the dilation a enlargement or reduction if the scale factor is 2.5?

• Enlargement

• Reduction

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

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

• (5,3)

• (20,12)

• (-20,-12)

• (-5,-3)

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4