Geometric Rotations

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 degrees clockwise rotation mean?

Back

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

Front

What does 180 degrees rotation about the origin do to a point (x, y)?

Back

It transforms the point to (-x, -y).

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

How do you determine the angle of rotation?

Back

The angle of rotation is measured in degrees and indicates how far the figure is turned around the center of rotation.

Front

What is the center of rotation?

Back

The center of rotation is the fixed point around which a figure is rotated.

Front

If a point A(2, 3) is rotated 90 degrees counterclockwise about the origin, what are the coordinates of A'?

Back

A' will be (-3, 2).

Front

What is a complete description of a 270 degrees clockwise rotation?

Back

It is equivalent to a 90 degrees counterclockwise rotation.

Front

What happens to the coordinates of a point when it is rotated 180 degrees about the origin?

Back

The coordinates change from (x, y) to (-x, -y).

Front

What is the term for a turn in geometry?

Back

Rotation.