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PROOF OF Proposition 17

Author:Jeff Barrett

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Folding door
Proving Triangles Similar: Multistep Transformations
Position Vector and Derivative Vector
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Portions of a Sphere

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Angle at the centre (page 3)
Perpendicular Bisector of Chord
Partial Sums of Arithmetic Sequences
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The Math Circle

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Numbers
Reflection
Vectors 2D (Two-Dimensional)
Expected Value
Logarithmic Functions

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