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向量的內積與面積
Author:
陳建銘
GeoGebra
New Resources
第三周作业效果演示
折扣
百分數及其應用
第八周作业2
盈利與虧蝕
Discover Resources
分數的加法
折扣 例2
軌跡三︰移動點與一固定線段保持固定距離(運動場跑道)
翰林B4習p85_10
腾讯网
Discover Topics
Plane Figures or Shapes
Orthocenter
Trapezoid
Mathematics
General Quadrilateral