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探索三角形外角定理
Author:
Gideon Huang
1. 鍵入或拖曳角A的度數。 2. 拖曳B點和C點,試觀察規律。 3. 重複1~2,你發現什麼?
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兩組對邊相等的四邊形
找出對稱軸
異分母分數減法
算柱 (兩位數)
三位數除以一位數(二)
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p10-4
正多邊形各邊中點連線所圍成的圖形v2
yuanmianjituidao
二項分佈的副本
整數
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Conic Sections
Linear Regression
Quadratic Equations
Ellipse
Congruence