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bisector

American

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

noun

Geometry.

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

bisector British

/ baɪˈsɛktə /

noun

a straight line or plane that bisects an angle
a line or plane that bisects another line

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of bisector

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

bisector

So, if double, angle is 60°. is the perpendicular bisector of so it cuts in half.

From Textbooks ● Dec. 1, 2021

Angle is double angle so its measure is 60°. is the perpendicular bisector of so it cuts in half.

From Textbooks ● Feb. 13, 2015

This proposition enables us to compute the length of a bisector of a triangle if the lengths of the sides are known.

From The Teaching of Geometry by David Eugene Smith

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

From The Teaching of Geometry by David Eugene Smith

The centers of all the circles through G and G' lie on the perpendicular bisector of the line GG'.

From An Elementary Course in Synthetic Projective Geometry by Derrick Norman Lehmer

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023