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作者：
iheinz@avallain.com
GeoGebra
最新資源
Untitled
Pythagorean Template: Integer Legs
seo tool
z`]]
Pythagorean Theorem: Quick Illustrator
探索資源
Polygon Explorer
Triangle
Golden Spiral 2 with pentagram
Vortical model of Philolaus' cosmos
Types of a Triangle
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積分
坐標
Plane Figures or Shapes
周長
菱形