Transformations Review

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 pre-image?

Back

The figure before a transformation occurs.

Front

What is an image in transformations?

Back

The figure after a transformation has occurred.

Front

What does it mean to reflect a shape over the y-axis?

Back

To reflect a shape over the y-axis means to create a mirror image of the shape across the y-axis.

Front

What is dilation in geometry?

Back

Dilation is a transformation that changes the size of a shape but not its shape.

Front

What is the scale factor in dilation?

Back

The scale factor is the ratio of the size of the image to the size of the pre-image.

Front

How do you translate a shape?

Back

To translate a shape means to slide it from one position to another without rotating or flipping it.

Front

What is a rotation in geometry?

Back

A rotation is a transformation that turns a shape around a fixed point.

Front

What is the difference between translation and reflection?

Back

Translation moves a shape without changing its orientation, while reflection creates a mirror image of the shape.

Front

What does it mean to rotate a shape 90 degrees clockwise?

Back

To rotate a shape 90 degrees clockwise means to turn the shape a quarter turn to the right around a fixed point.