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波的干涉 Wave Interference
Author:
W.L. Wong, Albert
GeoGebra
New Resources
拼砌四邊形
四邊形的特性
兩組對邊相等和有直角的四邊形
第八周作业
三位數除以一位數（二）
Discover Resources
簡單拋物線
牟合方蓋
圓周
半角公式R.J. 沃克(R.J. Walker)
马鞍面旋转
Discover Topics
Statistical Characteristics
Conic Sections
Standard Deviation
Differential Calculus
Symmetry