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 are the four main types of transformations?

Back

The four main types of transformations are translation, rotation, reflection, and dilation.

Front

What is a reflection in geometry?

Back

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

Front

What is a rotation in geometry?

Back

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

Front

What is a translation in geometry?

Back

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

Front

What is dilation in geometry?

Back

Dilation is a transformation that changes the size of a figure but keeps its shape, either enlarging or reducing it.

Front

What does it mean to rotate a point 90 degrees clockwise around the origin?

Back

To rotate a point 90 degrees clockwise around the origin, switch the x and y coordinates and change the sign of the new x coordinate.

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 original figure.

Front

How do you determine the scale factor when dilating a point?

Back

To determine the scale factor, divide the coordinates of the dilated point by the coordinates of the original point.

Front

What happens to the coordinates of a point during a 180 degree rotation?

Back

During a 180 degree rotation, the coordinates of a point (x, y) change to (-x, -y).