Dynamic Geometry 1474: Butterfly Theorem, Circle, Chords, Midpoints, Step-by-step Illustration
The dynamic geometry figure below shows a circle O with M midpoint of a chord AB. Chords CD and EF pass through M. Chords CF and DE intersect AB at G and H, respectively. Prove that M is the midpoint of GH.
Static Diagram of Geometry Problem 1474
Poster of the Butterfly Theorem 1474 using iPad Apps
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Classroom Resource:
Interactive step-by-step animation using GeoGebra
This step-by-step interactive illustration was created with GeoGebra.
- To explore (show / hide): click/tap a check box.
- To stop/play the animation: click/tap the icon in the lower left corner.
- To go to first step: click/tap the "Go to step 1" button.
- To manipulate the interactive figure: click/tap and drag the blue points or figures.
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