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Math
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Advanced Geometry
Advanced Plane Geometry
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Advanced Applications of the Law of Sines and Cosines
Advanced Geometry Computations: Huge Area Formulas
Bretschneider's Formula
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Bretschneider's Formula Okay, so far we've seen two bashy formulas for areas of general triangles and cyclic quadrilaterals. Now, we still don't know the area of a general quadr…
By Eric Zhang
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