Review Activity: Congruence Transformations

Front

What is a congruence transformation?

Back

A congruence transformation is a transformation that preserves the shape and size of a figure, including translations, rotations, and reflections.

Front

What is reflection in geometry?

Back

Reflection is a transformation that flips a figure over a line, creating a mirror image.

Front

What is translation in geometry?

Back

Translation is a transformation that moves every point of a figure the same distance in a specified direction.

Front

What is rotation in geometry?

Back

Rotation is a transformation that turns a figure around a fixed point, called the center of rotation, by a certain angle.

Front

What is the line of reflection?

Back

The line of reflection is the line over which a figure is reflected to create a mirror image.

Front

How do you reflect a point over the x-axis?

Back

To reflect a point (x, y) over the x-axis, the new point will be (x, -y).

Front

How do you reflect a point over the y-axis?

Back

To reflect a point (x, y) over the y-axis, the new point will be (-x, y).

Front

What happens to the coordinates of a point when it is translated by (x+2, y-5)?

Back

The point moves 2 units to the right and 5 units down.

Front

What is the effect of translating a point by (x, y+6)?

Back

The point moves 6 units up.

Front

What is the difference between a reflection and a rotation?

Back

A reflection creates a mirror image over a line, while a rotation turns a figure around a point.