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Ptolemy's Theorem for Cyclic Quadrilaterals

Author:Steve Phelps

Topic:Quadrilaterals

New Resources

Equation of Locus - Parabola
Pitfalls of Disk/Washer Method
Prism Drawn in 1-Point Perspective
Reflection = 180° Rotation about a Line
Locus Related to Descartes' Folium

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Integration00
Construction: Draw a perpendicular line through a point on the line
Trigonometric Equations
String art &Symmetry Catalin
six trig functions on unit circle

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Tangent Line or Tangent
Trigonometry
Step Functions
Rotation
Means

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