8R Congruent Transformations Review!

Front

What is a reflection in geometry?

Back

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

Front

What is a rotation in geometry?

Back

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

Front

What does it mean for two figures to be congruent?

Back

Two figures are congruent if they have the same shape and the same size.

Front

What is the effect of a 180-degree rotation on a point (x, y)?

Back

The image of the point (x, y) after a 180-degree rotation around the origin is (-x, -y).

Front

What happens to a point (x, y) after a reflection across the x-axis?

Back

The image of the point (x, y) after a reflection across the x-axis is (x, -y).

Front

What happens to a point (x, y) after a reflection across the y-axis?

Back

The image of the point (x, y) after a reflection across the y-axis is (-x, y).

Front

What is the image of point C(-10, 1) after a rotation of 180 degrees around the origin?

Back

C'(10, -1) is the image of point C(-10, 1) after a rotation of 180 degrees around the origin.

Front

What is the image of point B(-6, -2) after a reflection across the x-axis?

Back

B'(-6, 2) is the image of point B(-6, -2) after a reflection across the x-axis.

Front

What is the image of point A(3, 4) after a rotation of 90 degrees counterclockwise around the origin?

Back

A'(-4, 3) is the image of point A(3, 4) after a rotation of 90 degrees counterclockwise around the origin.

Front

What is the image of point D(5, -3) after a reflection across the y-axis?

Back

D'(-5, -3) is the image of point D(5, -3) after a reflection across the y-axis.