CK-12 Geometry-Concepts

5.2. Perpendicular Bisectors http://www.ck12.org

5.2 Perpendicular Bisectors

Here you’ll learn what a perpendicular bisector is and the Perpendicular Bisector Theorem, which states that if a
point is on the perpendicular bisector of a segment, then it is equidistant from the endpoints of the segment.

What if an archeologist found three bones in Cairo, Egypt buried 4 meters, 7 meters, and 9 meters apart (to form a
triangle)? The likelihood that more bones are in this area is very high. The archeologist wants to dig in an appropriate
circle around these bones. If these bones are on the edge of the digging circle, where is the center of the circle? Can
you determine how far apart each bone is from the center of the circle? What is this length? After completing this
Concept, you’ll be able to answer questions like these.

Watch This

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URL: http://www.ck12.org/flx/render/embeddedobject/52534

CK-12 Foundation: Chapter5PerpendicularBisectorsA

MEDIA

Click image to the left for use the URL below.

URL: http://www.ck12.org/flx/render/embeddedobject/1298

James Sousa: Constructing Perpendicular Bisectors