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zentangle

Author:陳隆期

New Resources

幾何作圖題：切三圓（題目）
湖南省张毅郴数字教研工作室 logo
算柱 (兩位數)
Nested spiral octagon
sanjiaohanshu

Discover Resources

圖二
Rolling Square
橢圓規Ellipsograph (Trammel of Archimedes)
多边形外角和的副本
HKCEE 2009 Q17

Discover Topics

Algebra
Circumcircle or Circumscribed Circle
Pythagoras or Pythagorean Theorem
Orthocenter
Trigonometric Functions

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