Dilations

Quadrilateral NDPM was dilated to quadrilateral N'D'P'M'. What was the scale factor for this dilation?

• 2

• 3

• 1/3

• 1/2

Congruent figures are figures that are the SAME size and the SAME shape.

A dilation produces a congruent figure.

• True

• False

In this figure, triangle TRS is the ​ (a)   , triangle T'R'S' is the ​ (b)   and a(n) ​ (c)   occurred.

• pre-image
• image
• enlargement
• reduction
• spin
• flip

Which of the following statements is true about the scale factor (k) for this dilation?

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½
• ¼
• 4
• 2

State the coordinates of point C after a dilation with a scale factor of 1/2 and center of dilation at point P.

• (-6, 1)

• (-3, -2)

• (1, -6)

• (-2, -3)

A triangle has vertices with coordinates A(2,0), B(3, -1) and C(-2,-5). If the triangle is dilated by a scale factor of 3, with the origin as the center of dilation, what are the coordinates of the vertices of the new image?

• A'(5,3), B'(6,2), C'(1,-2)

• A'(6,0), B'(9,-3), C'(-6,-15)

• A'(2/3,0), B'(1,-1/3), C'(-2/3,-5/3)

• A'(-1,-3), B'(0,-4), C'(-5,-8)

If the scale factor is between zero and one, the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger

A dilation produces a similar figure

• True
• False

A dilation is which of the following: 

• only an enlargement
• only a reduction
• Either an enlargement or a reduction
• Neither an enlargement or a reduction