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以 Unit Circle 了解 Sine 的正/負的副本
Author:
zhujianpeng
,
gklwong
以 Unit Circle 了解 Sine 的正/負
GeoGebra
New Resources
找出對稱軸
算柱 (兩位數)
近似值：有效數字
直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
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Stem and Leaf(幹葉圖)
先估算，後看解釋
圓例2
三角形重心、垂心、內心、外心、尤拉線、九點圓圖解
微積分基本定理的副本
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Diagrams
Hypothesis Testing
Volume
Algebra
Inequalities