Rotations, Reflections, and Translations Review

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 in a specific direction.

Front

What does 90° clockwise rotation mean?

Back

It means turning a figure 90 degrees to the right around a fixed point.

Front

What is the result of a 180° rotation about the origin?

Back

The coordinates of each point (x, y) become (-x, -y).

Front

How do you perform a translation in geometry?

Back

A translation moves every point of a figure the same distance in a specified direction.

Front

What is the effect of translating a point (x, y) 3 units to the right and 6 units up?

Back

The new coordinates will be (x+3, y+6).

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 the line of reflection?

Back

The line of reflection is the line over which a figure is reflected, creating a mirror image.

Front

What happens to the coordinates of a point (x, y) when reflected over the x-axis?

Back

The new coordinates become (x, -y).

Front

What happens to the coordinates of a point (x, y) when reflected over the y-axis?

Back

The new coordinates become (-x, y).

Front

What is the angle of rotation for a full rotation?

Back

360°.