Dilations in Coordinate Plane

A scale factor of 1/2 reduces a figure.

• True

• False

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

Triangle ABC has vertices at A(2,3) B(-5,-1) C(0,5). Its image, Triangle A'B'C', has vertices at A'(4,6) B'(-10,-2) and C'(0,10). What is the scale factor?

Identify the type of dilation for the scale factor k=1/2.

• Reduction

• Enlargement

• Isometry

• None of these

Identify the type of dilation given the scale factor k=5/4

• Reduction

• Enlargement

• Isometry

• None of these

Which figure could be the result of dilating the trapezoid with a scale factor between 0 and 1?

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Which figure could be the result of dilating this triangle with a scale factor greater than 1?

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Which figure could be the result of dilating this rectangle with a scale factor between 0 and 1?

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Rectangle ABCD is dilated by a scale factor of 1/2 with a center of dilation at the origin. What are the coordinates of the image of point B' ?

• (–2, 3)

• (3, –2)

• (–8, 12)

• (12, –8)

What are the coordinates of the image of point A after the segment has been dilated by a scale factor of 1/4 with a center of dilation at the origin?

• (–2, 1)

• (1, –2)

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