# Perpendicular Bisectors

## Intersect line segments at their midpoints and form 90 degree angles with them.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Perpendicular Bisectors

by CK-12 //basic
Apply perpendicular bisector properties.
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## Perpendicular Bisectors Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on perpendicular bisectors.
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## Perpendicular Bisectors Examples - Basic

by CK-12 //basic
This video provides the student with a walkthrough of one or more examples from the concept "Perpendicular Bisectors".
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## Constructing the Perpendicular Bisectors of the Sides of a Triangle

by CK-12 //basic
Explains how to construct the perpendicular bisectors of the sides of a triangle.
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## Proof of the Perpendicular Bisector Theorem

by CK-12 //basic
States and proves the perpendicular bisector theorem.
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## Proof of the Perpendicular Bisector Theorem Converse

by CK-12 //basic
States and proves the perpendicular bisector theorem converse.
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## Determining Values Using Perpendicular Bisectors

by CK-12 //basic
Provides example problems of solving for unknown values using the properties of the perpendicular bisectors of the sides of a triangle.
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