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CIRCLE  DEMONSTRATIONS

Disclaimer:

The following movie and sketch files are NOT proofs of theorems.  They are merely demonstrations of theorems at work.  They are based on geometry construction so the laws of geometry hold.  Despite each movie and sketch adhering to these laws, they only demonstrate a truth and do not sufficiently prove a theorem.

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A CHORD PERPENDICULAR TO A DIAMETER 

INTERSECTING CHORDS

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CLICK FOR SKETCH

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INSCRIBED ANGLE

INSCRIBED ANGLE CONTAINING DIAMETER

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CLICK FOR SKETCH

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INSCRIBED QUADRILATERAL

RADIUS PERPENDICULAR TO A TANGENT

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CLICK FOR SKETCH

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TWO INTERSECTING TANGENT SEGMENTS

A SECANT INTERSECTING A TANGENT AT POINT OF TANGENCY

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CLICK FOR SKETCH

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TWO INTERSECTING SECANT SEGMENTS

A SECANT INTERSECTING A TANGENT AT EXTERIOR POINT

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CLICK FOR SKETCH

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CLICK FOR SKETCH


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