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Geometry 101

geometry vocabulary

What is an angle bisector? a ray that divides a given angle into two congruent angles, each half the size of the given angle
What are adjacent angles? two angles that share a vertex and a side, but no points in their interiors
What is a decagon? a polygon with ten sides
What is a midpoint? the midpoint of a segment halfway between two points
What are perpendicular bisectors? a line, segment, or ray that is perpendicular to a segment at its midpoint
What is a plane? a flat surface that has no thickness and extends without end in the direction of all the lines it contains
What is a regular polygon? all sides and angles are congruent
What is a rhombus? parallelogram with 4 congruent sides
What is a segment bisector? a line, segment, or ray that separates a segment into two congruent segments
What is a skew line? 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 skew lines.
What is a supplementary angle? two angles whose measures add up to 180 degrees
What is a complementary angle? two angles that add up to 90 degrees
Created by: candie2012