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海市蜃樓現象
Author:
Jia-ming Shiu
拉動三條折射率 可得到光的路徑
GeoGebra
New Resources
第八周作业
柱體建築師
三位數除以一位數（一）
異分母分數減法
四邊形的特性
Discover Resources
除法運算
線段前後分割
Angle between line and plane
密鋪2
两角和的正弦公式几何证明1
Discover Topics
Natural Numbers
Difference and Slope
Geometric Distribution
Bar Chart or Bar Graph
Unit Circle