Rigid Motion Transformations STAAR Review

Which geometric object is best used to define rotations?

• circle

• line

• segment

• degree

What geometric object is best used to define reflections?

• circle

• line

• segment

• degree

What geometric object is best used to describe translations?

• circle

• line

• segment

• degree

Identify the transformation from ABCD to A'B'C'D'.

• Translation

• Reflection across the x-axis

• Reflection across the y-axis

• 90^o counter clockwise rotation

A type of transformation where a figure is “flipped” over a line of symmetry. A reflection produces a mirror image of a figure.

• rotation

• translation

• dilation

• reflection

A transformation that “turns” a figure about a fixed point at a given angle and a given direction.

• rotation

• translation

• reflection

• dilation

True or False?
A rigid motion preserves angles measures but not side lengths of a figure.

• True

• False

Determine how to translate triangle ABC to triangle A'B'C'. 

• right 2, down 5

• right 2, down 9

• left 2, up 9

• left 2, down 9

How is trapezoid ABCD translated to trapezoid A'B'C'D'?

• 5 units down and 5 units to the right

• 5 units down and 1 to the right

• 8 units down and 5 units to the right

• 5 units down and 4 units to the right

Which answer shows a reflection across the y-axis?

• a

• b

• c

• d