Math 2 Unit 1 Transformations & Symmetry Quick Quiz #2

A rotation...

• moves points across a specified line so that the line is the perpendicular bisector of each line segment connecting corresponding pre-image and image points.

• moves points the same distance along lines that are parallel to each other.

• moves points along concentric circles and through the same angle of rotation.

• moves points away from,or close to, the center point by a given factor.

In a reflection, the line of reflection intersects the line segments connecting corresponding points of the pre-image at a _______.

• transformations

• translations

• equidistant

• 90 degreee angle

_______ preserve the distances and angles between anchor points on the pre-image so that the image is the same size and shape. This is also called isometry.

• Rigid motion transformations

• translations

• equidistant

• 90 degreee angle

True or False

When connecting the pre-image and image of a rotated object, circles describe the movement better than straight lines.

Bonus: Draw a diagram on graph paper to justify your answer.

• True

• False

Rotate the point Q (7,8) around the origin 90 degrees counterclockwise.

Use graph paper to plot the pre-image and image. State the point of the image. State the rule.

• (-7,-8)

• (8,-7)

• (-8,7)

• (8,7)

a)How many lines of symmetry does this shape have?

b)Draw all lines of symmetry.

c)Identify the name of the quadrilateral.

d)Tell what type of lines form the lines of symmetry.

• 1

• 2

• 4

• 8