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Orthocentre

Author:uccke

New Resources

找出對稱軸
兩位數加法
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）

Discover Resources

雜項
test1(尋找北極星)
Inclination and Gradient(傾角和斜率)
内外弦图1
动态演示面动成体：圆柱、圆锥、圆台、球

Discover Topics

Kite
Intersection
Pie Chart or Circle Chart
Poisson Distribution
Solids or 3D Shapes

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