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任意四边形各边中点的连线必构成平行四边形.许兴华数学

Author:许兴华数学
Topic:General Quadrilateral

New Resources

  • 兩位數除以一位數(二)
  • 兩組對邊相等和有直角的四邊形
  • 三位數除以一位數(二)
  • 兩組對邊相等的四邊形
  • 球體建築師

Discover Resources

  • cos(π/n)cos(2π/n)cos(3π/n) ... cos(nπ/n) = ?
  • -3/2 ≤ cosα + cosβ + cosγ ≤ 3
  • Book10-Unit7-拼出平行四邊形
  • 拋物線6--包絡線法
  • 橢圓2--四圓心近似法

Discover Topics

  • Combinatorics
  • Similar Triangles
  • Area
  • Centroid or Barycenter
  • Kite
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