Mathematical and Geometrical
Explorations
of the
Nine-Point Circle |
This circle is the first really exciting one to appear
in any course on elementary geometry.
Daniel Pedoe [1910- ]
This project focuses entirely on the investigation and exploration of
an interesting geometric concept, the Nine-Point Circle. A historical account
of the Nine-Point Circle is presented along with mathematical and geometrical
explorations and connections to the Nine-Point Circle.
Construction
of the Nine-Point Circle and Nine-Point Center
Historical
Background of the Nine-Point Circle
The
Eight-Point Circle and the Nine-Point Circle:
Mathematical History Overlooked
Properties
of the Nine-Point Circle and the Nine-Point Center
Existence
of the Nine-Point Circle: A Geometrical Proof
Altitudes,
Orthocenters, and the Nine-Point Circle
Pedal
Triangles and the Nine-Point Circle
Implications
for the Use of Teaching the Nine-Point Circle in a Secondary Mathematics
Geometry Class
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of Geometry I Homepage