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中考2019北京—24
Author:
宋晓燕
GeoGebra
New Resources
找出對稱軸
第八周作业
兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩位數除以一位數（一）
Discover Resources
四下_認識小數(學生版)
四角柱算體積
正弦定理的验证
正六面体分形
杯麵
Discover Topics
Histogram
Ratios
Geometric Transformations
Right Triangles
Vectors