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銳角三角：sin, cos
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
球體建築師
判斷球體
兩組對邊相等和有直角的四邊形
兩位數加法
第八周作业
Discover Resources
弦心距垂直平分弦
梯形旋轉
堆疊多邊形
畢氏定理(遮蔽法)
一次函数 二次函数 三角函数
Discover Topics
Confidence Interval
Straight Lines
Boxplot
Algebra
Similarity Transformation or Similarity