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Angle Sum of a Triangle by Paper Folding

Author:Anthony OR 柯志明

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Shells
apec
Reflection = 180° Rotation about a Line
רישום חופשי
Using Experimental Probability to Estimate π - Monte Carlo Method

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Area of parallelograms
Circle Theorem 3
ParallelogonSol
FOr the test
Scalar product

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Rotation
Step Functions
Algebra
Angles
Derivative

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