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Author:
William O'Brien
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Circle Passing Through 3 Points
Reflection across a line
Untitled
Pitfalls of Disk/Washer Method
Reflection Across 2 Parallel Lines
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Famous curves
Path from Origin to a Point
angle at centre twice angle at circumference
Co-ordinate geometry
Lined Paper 單行紙 (Landscape 橫向)
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Terms
Area
Dilation
Combinatorics
Volume