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Geometry 123

Some vocab. involving geometry

adjacent angles two angles that share a vertex and a side but no points in their interiors.
angle bisector a ray that divides a given angle into two congruent angles, each half the size of the given angle.
irregular polygons a polygon in an irreguler shape.
midpoint halfway between the endpoints.
parallelogram a quadrilateral with both pairs of opposite sides parallel.
perpendicular bisector a line, segment, or ray that is perpendicular to a segment at its midpoint.
plane a flat surface that has no thickness & extends without end in the directions of all the lines it contains.
quadrilateral a polygon with 4 sides.
regular polygon. a polygon with all its sides congruent and all its angle congruent.
segment part of a line, two endpoints.
segment bisector a line, segment, or ray that seperates a segment into two congruent segments.
skew lines lines in space that do not intersect and are not parallel. they do not lie in the same plane. skew segments must be parts of a skew line.
Created by: Marissa1005