The Book of Lemmas Proposition 1 - Maple Help

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The Book of Lemmas: Proposition 1

Main Concept

If two internally tangent circles touch at A, and if BD, EF are parallel diameters in the circles (such that BD points in the same direction as EF), then ADF is a straight line. Alternately, if two externally tangent circles touch at A, and if DB, EF are parallel diameters in the circles (such that DB points in the same direction as EF), then DAF is a straight line.

 

Adjust the sliders to change the radius of the inner circle and the angle of the diameters with respect to the horizontal axis. Also, drag the angles on the plot to change them.

 

Radius CD =     

Angle          =      

 

 

 

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