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賺賠：例1的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
賺賠
GeoGebra
New Resources
画直线等分三角形的面积
球体的体积推导（优化版）
垂直線的斜率
漂亮的摇摆曲线
圓周公式的應用
Discover Resources
双曲线
tessellation design
FHMS Corr Angles on NonParallel Lines
Orthocentre
「相似三角形」任务4的副本
Discover Topics
Plane Figures or Shapes
Congruence
Prism
Upper and Lower Sum or Riemann Sum
Step Functions