Congruence Transformations

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

The measures of three angles in a triangle are given by x, 2x, and 3x. What is the value of x? 

• 60
• 30
• 36
• 80

The original figure prior to a transformation.

• Pre-image
• Image

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

• rotation
• translation
• reflection
• dilation

Is the picture being reflected in the y-axis or x-axis?

• y-axis
• x-axis

G(-4,1),.....After a translation of 3 units down and 5 units right

• G’(-1,6)
• G’(1, -2)

Identify the transformation from A to D.

• 90^o Clockwise Rotation
• 180^o Rotation
• 270^o Clockwise Rotation
• 360^o Rotation

When a figure is reflected what happens?

• Same size and shape different orientation.
• Same size, different shape, same orientation
• different size, different shape, different orientation
• Same size, different shape, same orientation

When a figure is rotated what happens?

• Same size, different shape, same orientation
• Same size, different shape, same orientation
• different size, different shape, different orientation
• Same size and shape different orientation. 

Identify the transformation from C to D.

• 90^o Counter Clockwise Rotation
• 180^o Rotation
• 270^o Counter clockwise Rotation
• 360^o Rotation