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111
Copy of angles in a triangle (tiling)
111
Author:
lpyip
Copy of angles in a triangle (tiling)
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Copy of angles in a triangle (tiling)
New Resources
平行線的斜率
【案例】圆柱体内放置一个大球六个小球
三位數除以一位數（一）
漂亮的摇摆曲线
探究三角形的全等條件
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折紙畫橢圓
Addition of 3 Directed Numbers
example1_moon
巧克力包裝盒的夾角(三角形柱)
斜率乘积为定值（椭圆、双曲线）
Discover Topics
Variance
Cone
Addition
Rhombus
Matrices
