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Geometry Chapter 7

McDougal Littell Vocab.

The new figure that results from the transformation of a figure in a plane. image
The original figure in the transformation of a figure in a plave. preimage
The aperation that maps, or moves, a preimage onto an image. Three basics are reflections, rotations and translations. transformation
A transformation that preserves lengths. isometry
A type of transformation that uses a line that acts like a mirror. reflection
Tye of transformation that uses aline that acts like a mirror. line of reflection
A line that a figure in the plane has if the figure can be mapped onto itself by reflection in the line. line of symmetry
A type of transformation in which a figure is turned about a fixed joint. rotation
A fixed point in which a figure is turned around. center of rotation
The angle formed when rays are drawn from the center of rotation to a point and its inage. angle of rotation
A figure in the plane hae rotational symmetry if the figure can be mapped onto itself by a rotation of 180 degrees of less. rotational symmetry
A quantity that has both direction and magnitude, and is represented by an arrow drawn between two points. vector
The starting point of a vector. initial point of a vector
The ending point of a vector. terminal point of a vector
The form of a vector that combines the horizontal and vertical components of the vector. component form
The result when two or more transformations are combined to produce a single transformation. composition of transformation
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. frieze pattern or border pattern
Created by: dhmahlman