bisector

American  

[bahy-sek-ter, bahy-sek-] / baɪˈsɛk tər, ˈbaɪ sɛk- /

noun

Geometry.

1. a line or plane that bisects an angle or line segment.

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bisector British  

/ baɪˈsɛktə /

noun

1. a straight line or plane that bisects an angle

2. a line or plane that bisects another line

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Etymology

Origin of bisector

First recorded in 1860–65; bisect + -or ²

Example Sentences

Some of these terms, such as magnitudes, curve line, broken line, curvilinear figure, bisector, adjacent angles, reflex angles, oblique angles and lines, and vertical angles, need merely a word of explanation so that they may be used intelligently.

From Project Gutenberg

Thus, to locate an electric light at a point eighteen feet from the point of intersection of two streets and equidistant from them, evidently one locus is a circle with a radius eighteen feet and the center at the vertex of the angle made by the streets, and the other locus is the bisector of the angle.

From Project Gutenberg

Thus in the case of the locus of points in a plane equidistant from two given points, it is sufficient that the point be on the perpendicular bisector of the line joining the given points, and this is the first part of the proof; it is also necessary that it be on this line, i.e. it cannot be outside this line, and this is the second part of the proof.

From Project Gutenberg

If the lines are AB and CD, and the connection is to be made, as shown, from B to C, we may proceed as follows: Draw BC and bisect it at M. Erect PO, the perpendicular bisector of BM; and BO, perpendicular to AB.

From Project Gutenberg

The bisector of an angle of a triangle divides the opposite side into segments which are proportional to the adjacent sides.

From Project Gutenberg