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平行四邊形變奏曲III
Author:
周桂名
Topic:
Parallelogram
移動C點 在固定長度下觀察,平行四邊形角度的變化。 如果是菱形,又有何不同?
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兩組對邊相等的四邊形
三位數除以一位數(一)
球體建築師
找出對稱軸
異分母分數減法
Discover Resources
方格紙上畫長方形2
Newton
織布機織布機
作業
变化的三角形的外心.许兴华数学
Discover Topics
Expected Value
Upper and Lower Sum or Riemann Sum
Conditional Probability
Circumcircle or Circumscribed Circle
Similarity Transformation or Similarity