Translations, Reflections and Rotations

Front

What is a translation in geometry?

Back

A translation is a transformation that moves every point of a shape the same distance in a specified direction.

Front

What is a reflection in geometry?

Back

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

Front

What is a rotation in geometry?

Back

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

Front

What is the degree of rotation for a 90-degree clockwise rotation?

Back

The shape is turned 90 degrees to the right.

Front

What is the degree of rotation for a 180-degree rotation?

Back

The shape is turned halfway around, resulting in an upside-down image.

Front

What is the degree of rotation for a 270-degree clockwise rotation?

Back

The shape is turned 270 degrees to the right, or 90 degrees to the left.

Front

What is the difference between clockwise and counterclockwise rotation?

Back

Clockwise rotation moves in the same direction as the hands of a clock, while counterclockwise rotation moves in the opposite direction.

Front

What is a line of reflection?

Back

A line of reflection is the line over which a shape is reflected to create a mirror image.

Front

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

Back

The coordinates become (x, -y).

Front

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

Back

The coordinates become (-x, y).