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The Euler Line and the 9-point Circle
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| http://www.cut-the-knot.org/triangle/EulerLine.shtml | |
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| Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny | |
| A geometric explanation of the Euler Line - how complex numbers give us a broader outlook on the geometric configuration - and the 9-point circle of a triangle ABC, which passes through the feet of the three altitudes, the midside points of ABC, and the midpoints of segments that join the orthocenter with the vertices of the triangle. | |
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| Levels: | High School (9-12), College |
| Languages: | English |
| Resource Types: | Web Interactive/Java |
| Math Topics: | Conic Sections and Circles, Triangles and Other Polygons |
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