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平行四邊形之變奏I
Author:
周桂名
Topic:
Parallelogram
拉動一下C、D兩點，觀察一下！
GeoGebra
New Resources
拼砌四邊形
異分母分數減法
柱體建築師
【案例】2018年全国1卷理科12题
畫出對稱圖形
Discover Resources
謝爾賓斯基三角形
角平分線分點比例
蝴蝶線 butterfly line
relations of pavlue fisher method
anlge at centre twice angle at circumference
Discover Topics
Circle
Normal Distribution
Diagrams
Volume
Function Graph