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中考 2019 河南-23-2问：直角三角形
Author:
acchu
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Razmerje 7
Razmerje 10
hex用（点なしバージョン）1.00
Razmerje 8
Razmerje 9
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Nine Point Conic
AA similarity theorem (no timer)
Parallelograms
Equation of Circle_Hicks
Sinusoidal Functions
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Tangent Function
Cone
Combinatorics
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Natural Numbers