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曲柄搖桿
Author:
whlee1990
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
四邊形的特性
算柱 (兩位數)
兩位數除以一位數（二）
Discover Resources
弦的定理
Clock24hour
正弦函数图象
RLC串聯諧振
奔马
Discover Topics
Distributions
Histogram
Similarity Transformation or Similarity
Constructions
Tangent Function