Transformations Review

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape to create a new shape, called the image.

Front

What is the pre-image in a transformation?

Back

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

Front

What does it mean to translate a shape?

Back

To translate a shape means to slide it in a straight line from one position to another without changing its size, shape, or orientation.

Front

How do you represent a translation of 5 units right and 3 units down algebraically?

Back

(x + 5, y - 3)

Front

What is a dilation in geometry?

Back

A dilation is a transformation that changes the size of a shape but not its shape, using a scale factor.

Front

What happens to a shape when the scale factor is less than 1?

Back

The shape is reduced or shrunk.

Front

What is the scale factor if a shape is enlarged to twice its size?

Back

The scale factor is 2.

Front

What is the image in a transformation?

Back

The image is the new shape 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 shape and size of a figure, including translations, rotations, and reflections.

Front

What is the result of reflecting a shape over the x-axis?

Back

The y-coordinates of the points of the shape are multiplied by -1.