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 original figure and its 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 a constant distance in a specified direction.

Front

Back

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

Back

The line of reflection is the line y = x, which means the figure is flipped over this line.

Front

What is dilation in geometry?

Back

Dilation is a transformation that alters the size of a figure by a scale factor, either enlarging or reducing it.

Front

How do you calculate the image of a point after dilation?

Back

To find the image of a point after dilation, multiply the coordinates of the original point by the scale factor.

Front

What is the scale factor in dilation?

Back

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

Front

What does a scale factor greater than 1 indicate?

Back

A scale factor greater than 1 indicates an enlargement of the figure.

Front

What does a scale factor less than 1 indicate?

Back

A scale factor less than 1 indicates a reduction of the figure.