Identifying Transformations

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way, such as translating, rotating, reflecting, or dilating it.

Front

What is a translation?

Back

A translation is a transformation that slides a shape from one position to another without changing its size, shape, or orientation.

Front

What is a rotation?

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 a reflection?

Back

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

Front

What is a dilation?

Back

A dilation is a transformation that changes the size of a shape but keeps its proportions the same, either enlarging or reducing it.

Front

What does 90° counterclockwise rotation mean?

Back

It means turning a shape 90 degrees to the left around a fixed point.

Front

What does 180° rotation mean?

Back

It means turning a shape 180 degrees around a fixed point, resulting in an upside-down version of the original shape.

Front

What does 270° counterclockwise rotation mean?

Back

It means turning a shape 270 degrees to the left around a fixed point.

Front

What is the line of reflection?

Back

The line of reflection is the line over which a shape is flipped to create its mirror image.

Front

How do you identify a translation?

Back

You can identify a translation by observing that the shape has moved to a new location without any rotation or flipping.