Extended Concurrencies of a Triangle
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|Jim Wilson; Dept. of Mathematics Education, Univ. of Georgia|
|An exploration: take any triangle ABC. Construct equilateral triangles externally on each side and locate the center of each equilateral triangle. Label these centers A', B', and C' for the triangle centers opposite angles A, B, and C. Construct lines AA', BB', and CC'. Observe. A demonstration, and a proof, with extensions and Sketchpad sketches to download.|
|Levels:||High School (9-12)|
|Resource Types:||Lesson Plans and Activities, Articles, Documents/Sketches/Galleries, Geometer's Sketchpad|
|Math Topics:||Triangles and Other Polygons|
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