Transformations Pre Assessment

Fill in the blank: Translations create __________ figures.

• Similar

• Congruent

Translation Coordinate Rules

• (x,y) ->(y, x)

• (x,y) ->(x+h, y+k)

• (x,y) -> (-x, -y)

• (x, y) -> (-y, -x)

Name the transformation.

• Translation

• Reflection

• Rotation

Fill in the blank: Reflections create __________ figures.

• Similar

• Congruent

A change in the position, shape, or size of a geometric figure.

The original shape BEFORE a transformation is called the ​ (a)   and the new shape AFTER a transformation is called the ​ (b)   .

• preimage

• image

• preshape

• postshape

Match the following:

• reflection

• A transformation that enlarges or reduces a figure.

• dilation

• A transformation that turns a figure around a given point.

• rotation

• A transformation that flips a figure across a line.

• translation

• A transformation that slides a figure along a straight line.

Reflections over the x-axis change the ​ (a)   .

Reflections over the y-axis change the ​ (b)   .

• x-coordinate

• y-coordinate

• x-axis

• y-axis

In a rotation, the point that figures turn around is called the ______ of rotation.

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

• reduction

• enlargement

• scale factor

• center of dilation