; Notes_ Properties of Triangles-Perpendicular Bisectors and Angle Bisectors in Triangles_
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# Notes_ Properties of Triangles-Perpendicular Bisectors and Angle Bisectors in Triangles_

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```									                                        GEOMETRY
Lesson 4.1: PROPERTIES OF TRIANGLES – PERPENDICULAR BISECTORS AND ANGLE
BISECTORS IN TRIANGLES
NOTES

Objective: To identify and use perpendicular bisectors and angle bisectors in triangles

PERPENDICULAR BISECTOR

A perpendicular bisector of a side of a triangle is a
line, segment, or ray that passes through the midpoint of
the side and is perpendicular to that side.

Since a triangle has three sides, there are three
perpendicular bisectors in a triangle. The perpendicular
bisectors of a triangle intersect at a common point. When
three or more lines intersect at a common point, the lines
are called concurrent lines, and their point of intersection
is called the point of concurrency. The point of
concurrency of the perpendicular bisectors of a triangle
is called the circumcenter.

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