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Question 8

Author:Shum Kwok Ching, GeoGebra Institute of Hong Kong

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找出對稱軸
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
錐體建築師
四邊形的特性

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Incentre
與三個半圓相切之圓家封閉面積
水波干涉
正五角錐(可以旋轉，顯示邊，選擇透視)
拉格朗日插值多項式

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Terms
Sequences and Series
Cosine
Means
Linear Programming or Linear Optimization

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