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Chapter 19

Motion Geometry

vocabularydefinitions
Angle A figure formed by two line segments or rays that share the same endpoint
Circle A closed figure made up of points the same distance from the center
Ray A part of a line; it has one endpoint and continues without end in one direction
Line Symmetry What a figure has if it can be folded about a line and form two parts that match exactly
Rotational Symmetry What a figure has if it can be turned around a central point and still look the same in at least two positions
Congruent Having the same size and shape
Similar Having the same shape but maybe a different size
Transformation A movement of a figure by a translation, reflection, or rotation
Translation A movement of a figure to a new position along a straight line
Reflection A movement of a figure to a new position by flipping it over a line
Rotation A movement of a figure to a new position by turning it around a point
tessellation A repeating pattern of closed figures that cover a surface with no gaps or no overlaps
Created by: Central 4th Math