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.

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 translation?

Back

A translation is a transformation that slides a figure in a straight line from one position to another without changing its size or shape.

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 reflection?

Back

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

Front

What is a dilation?

Back

A dilation is a transformation that changes the size of a figure but keeps its shape the same, using a scale factor.

Front

How do you determine the scale factor in a dilation?

Back

The scale factor is determined by dividing the distance from the center of dilation to a point on the image by the distance from the center to the corresponding point on the original figure.

Front

What is the rule for a 180° rotation around the origin?

Back

The rule for a 180° rotation around the origin is (x,y) → (-x,-y).

Front

What is the rule for a reflection over the x-axis?

Back

The rule for a reflection over the x-axis is (x,y) → (x,-y).

Front

What is the rule for a reflection over the y-axis?

Back

The rule for a reflection over the y-axis is (x,y) → (-x,y).