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Maths
- Viviani's Theorem
- kgkgkgmGrowth of Facebook.com
- Proof without words: Cosine Rule (餘弦公式)
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Maths
cyrine kalleli, Jun 2, 2015
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1. Viviani's Theorem
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2. kgkgkgmGrowth of Facebook.com
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3. Proof without words: Cosine Rule (餘弦公式)
Viviani's Theorem
Observe the sum of the perpendicular distances from a point in or on an equilateral triangle.
gMath www.geogebra.hk
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