This is the "7.1: Rigid Motion in a Plane" page of the "Geometry Chapter 7" guide.
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Geometry Chapter 7   Tags: geometry, mahlman, math  

Last Updated: Feb 17, 2011 URL: Print Guide RSS Updates

7.1: Rigid Motion in a Plane Print Page



Isometry:  A transformation that preserves lengths. " Also called Rigid transformation"

Translations:  A transformation that maps every two points P and Q in the plane P' and Q' so that the following properties are true: 

1. PP' = QQ'

2. PP' ll QQ'

Reflections: A transformation that uses a line that acts like a mirror, called the line of reflection, with an image reflected in the line.

Rotations: A transformation in which a figure is turned about a fixed point, called the center of rotation.

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