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椭圆第一定义
Author:
wangyiyao
Topic:
Conic Sections
,
Ellipse
GeoGebra
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第八周作业
兩組對邊相等和有直角的四邊形
畫出對稱圖形
四邊形的特性
算柱 (兩位數)
Discover Resources
七巧板（tangram）
winter vacation homework 8
由對稱方法畫出指數函數的圖形
Effects on Dispersion
用極座標做時鐘的副本
Discover Topics
Integers
Geometric Transformations
Numbers
Volume
Definite Integral