GEOMETRY GLOSSARY
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Title  Description  

Base, Geometric  For a polygon, the line segment on the bottom. For a solid, the area of the "floor." 

Beta  Beta is the second letter of the Greek alphabet.  
Bisect  Infinite lengths are not bisected. We bisect, or divide into equal halves, angles or line segments. Rays and lines are not bisected. 

Bisector  A bisector cuts a geometric entity into two equal halves. It may divide an angle or a line segment, depending on the specific circumstance. A perpendicular bisector divides a line segment at a right angle. 
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