This gives step by step instructions on inscribing a hexagon in a circle includes a JavaSketchpad for interaction.
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To inscribe a regular hexagon in a circle.
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A helpful scientific calculator that runs in your web browser window.
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Holt Online Learning
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An interactive applet that demonstrates inscribed and central angles.
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Ron Blond's website
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This gives step by step instructions on constructing a regular decagon in a circle includes a JavaSketchpad for interaction.
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To inscribe a regular decagon in a circle.
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A proof that such an angle is a right angle.
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Ask Dr. Math
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Gives examples of problems with intercepted arc, central angle, and angles inside and outside the circle.
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Online Math Learning
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Explains arcs and inscribed angles.
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CliffsNotes
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More ideas towards a proof.
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Ask Dr. Math
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Explains inscribed angles, including an interactive tool.
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Cut the Knot
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