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和角公式tan(圖解)
Author:
陳柄何
GeoGebra
New Resources
正方形雪花图案
直線的斜率:水平變化 & 鉛垂變化
百分數及其應用
折扣
斐波那契螺旋弧线(表格法-可动态调节)
Discover Resources
平行綫的斜率
gjc091a27 三角形旋轉
正十二面體裁邊 (Chamfered Dodecahedron)
射线上滚动椭圆
纏繞畫1
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Function Graph
Planes
Constructions
Numbers
Right Triangles