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Unit 5 Vocabulary
point: a single location in space.
line segment: a straight row of points that starts at one point and ends at another.
line: a straight row of points that goes on forever in both directions.
ray: a straight row of points that starts at one point and goes on forever in one direction.
angle: formed by two rays, lines, or line segments that meet at a common point called the vertex.
parallel lines: always the same distance apart and never cross.
perpendicular lines: cross to form a right angle.