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The Nine-Point Center
Author:
Steve Phelps
The Nine-Point center is the center of the circumcircle of the medial triangle. Play through the construction and try your hand in the app below.
GeoGebra
GeoGebra
New Resources
Quiz: Finding Average Rate of Change
Variation Theory Parallelogram Proofs
Exploring the Derivative of a Quadratic Function
Average Rate of Change: Graph a Function (1)
Dissections by Guillermo Bautista
Discover Resources
min/max problem 1
challenge1
Vertex to standard 1
Investigation 1: Inscribed Angle Properties
parallelogram for experimentation
Discover Topics
Boxplot
Line Segment
Planes
Inequalities
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