Dialation Scale Factor

Dilations

(Scale Factor)

Multiple Choice

If a dilation produces a congruent figure, then the scale factor was equal to _____.

• 1/2
• 2
• 10
• 1

Multiple Choice

Dilate Point B by a scale factor of 3:

• (12,0)
• (12,12)
• (4,3)
• (0,12)

Multiple Choice

If your SF = 2.5, what type of dilation is it?

• Reduction

• Enlargement

Multiple Choice

If your SF = 0.8, what type of dilation is it?

• Reduction

• Enlargement

Multiple Choice

Similar figures have the same ______ but different ______. 

• measure; shapes
• sizes; shapes
• value; measures
• shape; sizes

Multiple Choice

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

• G' (5,3)

• G' (20,12)

• G' (-20,-12)

• G' (-5,-3)

Multiple Choice

Two objects that are the same shape but not the same size are _______.

• Congruent
• Vertical
• Similar
• Complementary 

Multiple Choice

If the scale factor is less than one, the new figure will be

• an enlargement
• a reduction
• a scale factor
• bigger

Multiple Choice

If the scale factor is greater than one, the new figure will be

• a reduction
• an enlargement
• a scale
• not proportional

Multiple Choice

What is the formula for scale factor?

• $\frac{new}{old}$

• $\frac{old}{new}$

Multiple Choice

Mr. Rivera takes a poster to STAPLES and tells them to use a scale factor 3.5 on the poster. What effect will a scale factor of 3.5 have on the original poster?

• Shrink

• Flip

• Turn

• Enlarge

Multiple Choice

What effect will a scale factor of 3/4 have on a figure?

• Enlarge

• Turn

• Shrink

• Flip

Multiple Choice

A triangle has the following vertices: A(-1,1) B(6,-2) C(3,5). If the triangle undergoes a dilation with a scale factor of 4, what will be the coordinates of C'?

• A' (5,5) B'(23, -2) C'(15, 23)

• A' (-5,5) B'(-23, -2) C'(16, 23)

• A' (-4,4) B'(24, -2) C'(15, 23)

• A' (-4,4) B'(24, -8) C'(12, 20)

Multiple Choice

Triangle PQR is shown. What are the coordinates of Q' when triangle PQR is dilated by a scale factor of 4 using the origin as center?

• Q' (16,20)

• Q' (20, 16)

• Q' (36, 16)

• Q' (24, 9)

Multiple Choice

Triangle STU is a dilation of Triangle PQR. What is the scale factor in the dilation?

• 3/4

• 1/2

• 2

• 1.5

Multiple Choice

Which is a TRUE statement about dilations?

• A dilation will ALWAYS reduce a figure.

• A dilation will ALWAYS enlarge a figure.

• A dilation will ALWAYS change the orientation of a figure.

• A dilation will ALWAYS produce a similar figure.

Multiple Choice

State the coordinate of the image of the given point B (4,9) under a dilation with center at the origin with the given scale factor of 2.

• B' (2 , 4.5)

• B' (-8 ,-18)

• B' (8 ,18)

• B' (9 ,4)

Multiple Choice

State the coordinate of the image of the given point B (4,9) under a dilation with center at the origin with the given scale factor of 2.

• B' (2 , 4.5)

• B' (-8 ,-18)

• B' (8 ,18)

• B' (9 ,4)