| Term | Definition |
|---|
| Transformation | The mapping, or movement, of all the points in a plane according to a common operation |
| Reflection | A transformation that "flips" over a line of reflection |
| Reflection line | A line that acts as a mirror or perpendicular bisector so that corresponding points are the same distance from the mirror |
| Translation | A transformation that "slides" each point of a figure the same distance in the same direction |
| Rotation | A transformatiiven angle on that turns a figure about a fixed point through a given angle and a given direction |
| Bisect | to divide a segment or an angle into two equal parts |
| Parallel Lines | Two lines are parallel if they lie in the same plane and they do not intersect |
| Perpendicular Lines | Two lines that intersect and form right angles |
| Congruent | Having the same size, shape and measure |
| Point | One basic undefined terms in geometry. Traditionally thought of as having no length, width, or thickness, and often a dot is used to represent it. |
| Line | Traditionally thought of as a set of points that have no thickness but its length goes on forever in two opposite directions |
| Plane | Traditionally thought of as going on forever in all directions (in two dimensions) and is flat ( i.e, it has no thickness) |
| Line Segment | The part of a line between two points on the line |
| Endpoints | The points at an end of a line segment |
| Intersection | The point at which two or more lines intersect or cross |
| Ray | Begins as a point and goes on forever in one direction |
| Corresponding sides | Sides that have the same relative positions in geometric figures |
| Corresponding angles | Angles that have the same relative positions in geometric figures |
| Angle | Created by two distinct rays that share a common end point |
| Angle Rotation | The amount of rotation about a fixed point |
Combine with other sets
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