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angle in semi-circle
Author:
lamyc
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
第八周作业
四邉形 (四年級) 教師版
拼砌四邊形
算柱 (兩位數)
Discover Resources
點到直線距離-3 最短發生在垂直時
圓餅圖
擴分、約分及比較大小
start and end clock face
Compare areas by cutting shapes Q3
Discover Topics
Complex Numbers
Parallelogram
Tangent Line or Tangent
Statistical Characteristics
Sine