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The Euler Line and Nine-Point-Circle Theorems

Frank Eccles 

January 1999, Volume 92, Issue 1, Page 50

Abstract:
A train of ideas leading to the application of a particular transformation, a dilation, to the proofs of both the Euler line and nine-point-circle theorems, to help introduce students to the important role that functions can play in the field of geometry.

Keywords:
Article
Grades 9-12
Geometry & Measurement
Teacher
Reasoning and Proof
Theory