Geometry CP 4.4-4.5 Check-up

Front

What is a congruence transformation?

Back

A congruence transformation is a geometric transformation that preserves the shape and size of a figure, meaning the pre-image and image are congruent.

Front

What is a translation in geometry?

Back

A translation is a type of transformation that moves every point of a figure the same distance in a specified direction.

Front

How do you describe a translation vector?

Back

A translation vector is described by its horizontal and vertical components, written as <horizontal, vertical>.

Front

What does it mean for two figures to be congruent?

Back

Two figures are congruent if they have the same shape and size, which can be shown through congruence transformations.

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 the line of reflection?

Back

The line of reflection is the line over which a figure is reflected, and each point of the figure is equidistant from this line.

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, by a certain angle.

Front

How do you specify a rotation?

Back

A rotation is specified by the center of rotation, the angle of rotation, and the direction (clockwise or counterclockwise).

Front

What is a dilation in geometry?

Back

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

Front

What is a scale factor in dilation?

Back

The scale factor is a number that describes how much a figure is enlarged or reduced during a dilation.