Geometry - Transformations

Front

What is the point of rotation?

Back

The point that does not move during a rotation.

Front

A turn is also called a ___________.

Back

Rotation.

Front

What happens to the coordinates of a point when it is rotated 90° counterclockwise about the origin?

Back

The coordinates change according to the rule: (x, y) becomes (-y, x).

Front

What are translations, reflections, and rotations collectively known as?

Back

Transformations.

Front

If point (-5, 2) is reflected over the y-axis, what are the coordinates of the new point?

Back

(5, 2).

Front

What is a translation in geometry?

Back

A transformation that slides a figure in a straight line from one position to another without changing its size or shape.

Front

What is a reflection in geometry?

Back

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

Front

What is the difference between rotation and revolution?

Back

Rotation is the movement of a figure around a point, while revolution is the movement of an object around another object.

Front

What is the center of rotation?

Back

The fixed point around which a figure rotates.

Front

How do you determine the new coordinates of a point after a 180° rotation about the origin?

Back

The coordinates change according to the rule: (x, y) becomes (-x, -y).