Lessons 4&5 Target 2 Post-Assessment

From A to B is the dilation a reduction or enlargement?

• Reduction
• Enlargement
• Neither
• I don't know

What is the scale factor from A to B?

• 4/3
• 3/4
• 4
• 3
• I don't know

Does this show a dilation? What is the scale factor?

• Yes, 2
• Yes, 1/2
• No, it is a translation
• No, it is a reflection
• I don't know

What is the scale factor?

• 0.5
• 1
• 2
• 0.25

This symbol shows_

• Congruence
• Similarity
• Rigid Transformations
• I don't know

Two figures can be similar if they have the _______ shape but _______ size.

• Different, Same
• Same, Same
• Same, Different
• Different, Different

Triangle EFG is drawn on the coordinate plane. The triangle is dilated by a scale factor of 1/3, with the center of dilation at the origin, to form triangle E'F'G'. Then, triangle E'F'G' is translated 3 units to the right to form triangle E''F''G''. What is the coordinate of E'' ?

Is this an enlargement or a reduction?

• Enlargement

• Reduction

What would be the coordinates of the new image after the following sequence of transformations is applied to Point B(3, 2):

1. Dilate by a scale factor of 3 from the origin

2. Translate 3 units down

• B''(9, -1)

• B''(9, 6)

• B''(9, 3)

• B''(6, 6)

• B''(6, 3)

Answer explanation

B(3, 2):

1. Dilate by a scale factor of 3 from the origin (multiply the coordinates by 3) B'(9,6)

2. Translate 3 units down (subtract 3 from the y-coordinate) B''(9,3)

Figures ABC and DEF are similar.  Which series of transformations of figure ABC shows that ABC and DEF are Similar? 

• 90 degree clockwise rotation, then dilation by a scale factor of ¾
  
• 90 degree counterclockwise rotation, then dilation by a scale factor of ¾
  
• Reflection across a vertical line, then dilation by a scale factor of ¾
• Reflection across a horizontal line, then dilation by a scale factor of ¾