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15 Cards in this Set
 Front
 Back
image

a new figure that results from the transformation of a figure in a plane


preimage

the original figure in the transformation of a figure in a plane


transformation

the operation that maps or moves a preimage onto an image


isometry

a transformation that preserves lengths. also known as rigid transformations


reflection

a type of transformation that uses a line that acts like a mirror, with an image reflected in the line


line of symmetry

a line that a figure in the plane has is the figure can be mapped onto itself by a reflection in the line


rotation

a type of transformation in which a figure is turned about a fixed point


center of rotation

the fixerd point is called the center of rotation


angle of the rotation

the angle formed when rays are drawn from the center of rotation to a point and its image


translation

a transformation that maps every two point P and Q in the plane to points P' and Q' so that PP'=QQ'


vector

a quantity that has both direction and magnitude, and is represented by an arrow drawn between two points


component form

component form of a vector is the form that combines the horizontal and vertical components of the vector


glide reflection

a transformation in which every point P is mapped onto a point P' by the followingtwo steps: 1) a translation maps P onto P'. 2) a reflection, in a line K parallel to the direction of the translation maps P onto P'


composition

when two or more transformations are combined to produce a single transformation, the result is called a composition of the transformation.


frieze pattern

a pattern that extends to the left and right in such a way that the pattern can be mapped onto itself by a horizontal translation
