Dilations 2

The "image" is the shape before the dilation.

• True
• False

Tags

CCSS.8.G.A.3

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

• (5,3)
• (20,12)
• (-20,-12)
• (-5,-3)

Tags

CCSS.8.G.A.3

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

• ½
• ¼
• 4
• 2

Tags

CCSS.8.G.A.3

Which of the following describes the image of a figure after a dilation that has a scale factor between zero and one?

• It has a different shape from the original figure and is smaller than the original figure.

• It has the same shape as the original and is smaller than the original figure.

• It has the same shape as the original and is larger than the original figure.

• It has the same shape and same size as the original figure.

Tags

CCSS.8.G.A.3

Triangle PQR has coordinates P(2, 4), Q(-2, 4), R(0, -6). What are the coordinates of R' after the image has been dilated by a scale factor 1.5?

• R'(0, -9)

• R'(-9, 0)

• R'(3, 6)

• R'(-3, 6)

Tags

CCSS.8.G.A.3

What are the coordinates of after a dilation with a scale factor of 2/3

• P'(-2, 1), Q'(0, 2), R'(2, 2)

• P'(-4, 2), Q'(0, 4), R'(4, 4)

• P'(-4, 2), Q'(4, 0), R'(4, 2)

• P'(-12, 6), Q'(0, 12), R'(12, 12)

Tags

CCSS.8.G.A.3

triangle has coordinates A(1, 2), B(6, -3) and C(0, 5). The triangle is dilated by a scale factor of 3. What are A', B' and C'?

• A'(1, 2), B'(6, -3) and C'(0, 5)

• A'(1, 3), B'(3, -3) and C'(3, 5)

• A'(3, 6), B'(18, -9) and C'(0, 15)

• A'(3, 6), B'(18, -9) and C'(3, 15)

Tags

CCSS.8.G.A.3

Point A(10, 20) was dilated to become A'(5, 10). What was the scale factor of dilation?

• 1/2

• 2

• 4

• 0.25

• 1/4

Tags

CCSS.8.G.A.3

What is a Dilation?

• An increase or a decrease in size that doesn't change the shape.

• A Movement from the original shape to somewhere else in the Coordinate plane.

• A Change in a direction from the movement left to right on the point of origin.

• A reflection of the shape that can only be reflected by the x or the y axis.

Tags

CCSS.8.G.A.3

Two objects that are the same shape, have the same angles but are NOT the same size are _______.

• Congruent

• Vertical

• Similar

• Complementary

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6