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Projection
Author:
Jia-ming Shiu
Projection
GeoGebra
New Resources
四邊形的特性
兩位數加法
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
第八周作业
Discover Resources
抛物线的参数方程
S5 Normal Distribution
三角形的內角和+內心與外心
ie 4
量角器3
Discover Topics
Optimization Problems
Terms
Variance
Angles
Geometric Mean