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圓周 (圖形B)
Author:
Keith Ko
移動右圖中的紅線到左方虛線，就知道它是相等於左圖的哪條線。
GeoGebra
New Resources
球體建築師
拼砌四邊形
四邉形 (四年級) 教師版
sanjiaohanshu
四邊形的特性
Discover Resources
中五軌跡19.1 Q4
Stem and Leaf(幹葉圖)
p05 eqidistant from two lines
圓與切線
橢圓1-同心圓法
Discover Topics
Rational Numbers
Definite Integral
Congruence
Circumcircle or Circumscribed Circle
Similarity Transformation or Similarity