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## Warm Up 8/31/12

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**Warm Up 8/31/12**Pick an object in the real world (outside of this classroom) that represents each of the following • Point • Line • Plane • Intersecting lines • Intersecting planes**Line Segment**• Characteristics: • Definition: A segment is the part of a line consisting of two points, called endpoints, and all points between • Symbolically:**Ray**• Characteristics: • Definition: A ray is the part of a line consisting of one endpoint and all the points of the line on one side of the endpoint. • Symbolically:**Midpoint**• Characteristics: • Definition: The point that divides a segment in half • Symbolically:**Parallel Lines**• Characteristics: • Definition: Lines the lie in the same plan and do not intersect • Symbolically:**Congruent Segments**• Characteristics: • Definition: Segments that have the same length • Symbolically:**Bisector of a segment**• Characteristics: • Definition: a line, segment, ray or plane that intersects a segment at its midpoint • Symbolically: