21 terms

Transformation

Operation that changes or alters the form of a figure

Dilation

A transformation in which a figure grows larger or smaller

Reflection

A transformation in which a geometric figure creates a mirror image

Rotation

A transformation in which a figure turns around a fixed center point

Translation

A transformation in which each point of a figure moves the same direction and distance

Image

The result of a transformation

Pre-image

The original figure prior to a transformation

Congruent

Exactly equal in size and shape

Similar

Having the same shape but not necessarily the same size.

Symmetry

One half of a figure is a mirror image of the other half

Center of Dilation

A fixed point in the plane in which all points are enlarged or shrunk from

Line of reflection

A line that is reflected over in a reflection

Quadrant I

Upper right section of coordinate plane (+,+)

Quadrant II

Upper left section of coordinate plane (-,+)

Quadrant III

Lower left section of coordinate plane (-,-)

Quadrant IV

Lower right section of coordinate plane (+,-)

x-axis

Axis that runs horizontally on coordinate plane

y-axis

Axis that runs vertically on coordinate plane

Line: x = 2

Line in which all x-values equal 2, resulting in a vertical line

Line: y = 2

Line in which all y-values equal 2, resulting in a horizontal line

Scale Factor

A number that multiplies some quantity - represented by a c or k