Geometry Vocabulary

when two figures are the same size and same shape

• congruent

• similar

a transformation that enlarges or reduces a figure

• translation

• reflection

• rotation

• dilation

a shape or figure after a transformation; the new figure

• image

• pre-image

the direction in which a figure is placed on a coordinate plane

• orientation of the figure

• corresponding

a shape or figure before a transformation; the original figure

• image

• pre-image

a transformation that turns a figure around a center of rotation

• translation

• reflection

• rotation

• dilation

the ratio of corresponding sides in similar figures; the multiplier used to create a dilation

• vertices

• scale factor

when two figures are the same shape and have proportional sides and congruent angles

• congruent

• similar

a transformation that moves each point of a figure the same distance and same direction

• translation

• reflection

• rotation

• dilation

What is the term describing the amount of space taken up by a 2D shape?

• Perimeter

• Volume

• Squares

• Area