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angle sum of polygon

Author:Felix Yip Wing Chung

New Resources

  • 多邊形的面積
  • 祖冲之的期望:内棋与外棋
  • 兩位數除以一位數(二)
  • 三位數除以一位數(二)
  • 平行線的斜率

Discover Resources

  • 分解三棱柱
  • Ladder on Wall
  • 四角柱體(長方體)的截面
  • 鉛筆畫圓
  • 三角形全等的直观图(可重合).许兴华数学

Discover Topics

  • Polygons
  • Histogram
  • Matrices
  • Addition
  • Line Segment
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