8-2 Pre-Assessment

A point around which a figure is rotated is called a __.

• A dilation
• A scale factor
• Center of Rotation
• Line of Reflection
• I don't know

Reflect Rectangle ABCD over the y-axis.

The coordinates of a point and its image are (7,-7) and (7,7). Is the reflection over the x-axis or y-axis?

• x-axis
• y-axis
• z-axis
• m-axis
• I don't know

Figures that have the same shape and the same size are called congruent.

• True
• False
• I don't know

A _____ creates a mirror image of a figure.

• Rotation
• Reflection
• Translation
• Dilation
• I don't know

Reflect over the x-axis.

Find the coordinates of the image after the transformation. Rotate 90° counterclockwise about the origin.

M (-3, 2)

N(-5, 5)

P(-4, 5)

Q(-2, 2)

• M '(–2, 3), N'(–5, 5), P'(–5, 4), Q'(–2, 2)
• M '(–2, –3), N'(–5, –5), P'(–5, –4), Q'(–2, –2)
• M '(3, 2), N'(5, 5), P'(4, 5), Q'(2, 2)
• M '(2, 3), N'(5, 5), P'(5, 4), Q'(2, 2)
• I don't know

Find the coordinates of the image after the transformation. Translate 6 units right and 3 units up

• D'(2, 1), E'(4, 0), F'(3, –2), G'(1, –1)
• D'(2, –5), E'(4, –6), F'(3, –8), G'(1, –7)
• D'(–1, 4), E'(1, 3), F'(0, 1), G'(–2, 2)
• D'(–10, 1), E'(–8, 0), F'(–9, –2), G'(–11, –1)
• I don't know

Describe the transformation from B to B'

• Translation up 5 units.
• Reflection across the x-axis
• 90 degree rotation
• I don't know

Describe the transformation.

• Reflection across the x-axis
• Reflection across the y-axis
• 90 degree rotation around the origin
• I don't know