Check-In Lessons 5-7

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)

• A'(9,9) B'(18,18) C'(27,9)
• A'(6,6) B'(9,9) C'(12,6)
• A'(0,0) B'(3,3) C'(6,0)
• A'(1,1) B'(2,2) C'(3,1)

Tags

CCSS.8.G.A.3

What is the scale factor used to dilate figure PRG?

• 2

• 3

• 1/2

• 1/3

Tags

CCSS.8.G.A.3

Are the following similar? Why or why not?

• Yes. All pairs of corresponding angles are congruent.
• No, the corresponding angles are not equal.
• No, the ratios of the corresponding sides are not equal.

Tags

CCSS.HSG.SRT.A.2

What sequence of transformations will get you from shape ABC to shape A'B'C' in two steps?

• Reflection, then Translation
• Rotation, then Dilation
• Reflection, then Rotation
• Dilation, then Reflection

Tags

CCSS.8.G.A.3

What is the dilation going from the smaller triangle to the larger triangle?

• 4

• 1/3

• 3

• 1/4

Tags

CCSS.8.G.A.3

Describe a sequence of transformations that shows these two images are similar.

• Rotate 90 degrees counterclockwise, translate to the right, reflect upward, dilate by 2

• Rotate 90 degrees clockwise, reflect upward, translate to the right, dilate by 2

• Rotate 90 degrees clockwise, translate to the left, reflect upward, dilate by 1/2

• Rotate 90 degrees counterclockwise, reflect downward, dilate by 1/2

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

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 k = 1/2.

• (5,3)
• (20,12)
• (-20,-12)
• (-5,-3)

Tags

CCSS.8.G.A.3

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