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综合（1） 3.
Author:
Sylvie
GeoGebra
New Resources
第八周作业1
第三周作业效果演示
正方形雪花图案
异形操场
第八周作业2
Discover Resources
Vector equation in R2
平行四邊形柱算體積(可以切開)
ie 7
兩線段和圓的關係
保持2:3:4
Discover Topics
Planes
Curve Sketching
Percentages
Multiplication
Trigonometric Functions