5.2.3 Transformations and Congruence

5.2.3 Transformations and Congruence

By Sara Fisher

Multiple Choice

If the scale factor is 1 ....

• The pre-image and the image are the same thing.

• The image is BIGGER than the pre-image

• The image is SMALLER than the pre-image

Multiple Choice

If the scale factor is greater than 1 ....

• The pre-image and the image are the same thing.

• The image is BIGGER than the pre-image

• The image is SMALLER than the pre-image

Multiple Choice

If the scale factor is less than 1 ....

• The pre-image and the image are the same thing.

• The image is BIGGER than the pre-image

• The image is SMALLER than the pre-image

Multiple Choice

A line segment contains points D(4,-2) and C(6,-10). If you dilate the points by a scale factor of 1/2, where would the new points be located?

• D'(8,4)

  C'(12,20)

• D'(8,4)

  C'(12,-20)

• D'(2,-1)

  C'(3,-5)

• D'(2,1)

  C'(3,5)

​Step 1: Reflect over the y-axis

​Step 2: Dilation with a scale factor of 3/2

​Does the order matter?

Multiple Choice

The coordinates of vertices of Polygon RSTV are R(2, 4), S(6, 4), T(6, 0), and V(2, 0). The Polygon is dilated with a scale factor of 3/2 and center (0, 0). Find S'.

• S'(9, 6)

• S'(18, 12)

• S'(4, 2)

• S'(4, 6)