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quadrilaterals 3
Author:
iedc
GeoGebra
New Resources
兩位數除以一位數（二）
兩位數除以一位數（一）
四邉形 (四年級) 教師版
畫出對稱圖形
兩組對邊相等和有直角的四邊形
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Quiz on Interior & Exterior Angles of Triangles 三角形內角和及外角：測驗
教學－面與面的夾角
Is this a prism 4
中間人星星
拋物線1-焦點法
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Cylinder
Linear Equations
Conic Sections
Piecewise Functions
Pythagoras or Pythagorean Theorem