Transformations

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way to produce a new shape.

Front

What is a reflection?

Back

A reflection is a type of transformation that flips a figure over a line of symmetry.

Front

What is a rotation?

Back

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

Front

What is a translation?

Back

A translation is a transformation that slides a figure from one position to another without turning it.

Front

What is dilation?

Back

Dilation is a transformation that changes the size of a figure but keeps its shape the same.

Front

What is a pre-image?

Back

The pre-image is the original figure before any transformation is applied.

Front

What is an image in transformations?

Back

The image is the new figure that results from applying a transformation to the pre-image.

Front

What does it mean for a transformation to be rigid?

Back

A rigid transformation preserves the size and shape of a figure.

Front

What happens to the coordinates of a point (x, y) when it is rotated 180° about the origin?

Back

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

Front

What is the line of symmetry?

Back

A line of symmetry is a line that divides a figure into two mirror-image halves.