American Heritage® Dictionary of the English Language, Fourth Edition
- n. Something that bisects, especially a ray that bisects an angle.
Century Dictionary and Cyclopedia
- n. A line drawn through the vertex of a triangle so as to bisect either the opposite side (bisector of the side) or the angle (bisector of the angle, or internal bisector), or to bisect the external angle formed by the adjacent sides (external bisector). Thus, in the figure, ABC being the triangle, AD is the bisector of the side BC; AE is the internal bisector, and AF the external bisector, of the angle A.
- n. geometry A line or curve that bisects or divides a line segment, angle, or other figure into two equal parts.
GNU Webster's 1913
- n. One who, or that which, bisects; esp. (Geom.) a straight line which bisects an angle.
- bisect + -or (Wiktionary)
“You point the hour hand at the sun, and the bisector of the angle between that and 12:00 on the watch is south in the northern hemisphere, north in the southern hemisphere.”
“Kingsland High Street is London's North-South bisector [A10] and Ridley Road joins it on its eastern side.”
“For Hirst, famous pickler of sharks and bovine bisector, all his art is about death.”
“December 15th, 2008 at 5: 09 pm harveys video casino slot machines says: harveys video casino slot machines … bisector, coachmen. monstrous chaperoned …”
“Climbing carefully around a slippery projecting rock, its base yet submerged, they came upon the loveliest of lovely little beaches, in shape almost a semi-circle, the water forming the bisector and the frowning red cliffs the arc.”
“Thus the crescent bisector defined by these crescent tips is also the same as before.”
“Draw the bisector of ∠ C and the perpendicular bisector ←→ of AB.”
“The perpendicular bisector of AB must bisect AB and therefore pass through G.”
“Thus, the bisector of ∠ ACB and the perpendicular bisector of AB intersect outside the triangle at G.”
“Since AG = BG (a point on the perpendicular bisector of a line segment is equidistant from the endpoints of the line segment) and ∠ ADG and ∠ BFG are right angles, DAG FBG (hypotenuse leg).”
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