Proof Without Words

Author:Steve Phelps

Drag the points. Drag the slider. What do you notice? What does it prove? How does it prove? Sincere thanks to Luis Guillermo de la Rosa Jiménez http://www.geogebratube.org/luisgdelarosa

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Average Value of a Function
函數的單調性
Billard V5.2 and V6
兩位數的位值
montecarlo circles 5

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Congruent Chords_Congruent Arcs
divideCurve1
圓的半徑和周界之關係_李樂雯
Untitled
Midpoint formula proof

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Mode
Fractal Geometry
Histogram
Trigonometry
Vectors