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正弦定理
Author:
yuchengda
GeoGebra
New Resources
柱體建築師
算柱 (兩位數)
第八周作业
異分母分數減法
拼砌四邊形
Discover Resources
銳角三角函數值的大小比較
三角形的內角、外角、內角和與外角和
过圆上一点作切线，三步
barara magic stick
S0E03 平面截立方体
Discover Topics
Linear Functions
Random Variables
Rational Numbers
Integers
Pythagoras or Pythagorean Theorem