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梯形有甚麼特性？
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79855
GeoGebra
New Resources
【案例】圆柱体内放置一个大球六个小球
球體建築師
兩組對邊相等的四邊形
三位數除以一位數（二）
異分母分數減法
Discover Resources
「相似三角形」任务4
winter vacation homework 8
平行線
半圓內切球內切圓
PROBLEM SOLVING(COLOUR)
Discover Topics
Cube
Natural Numbers
Intersection
Indefinite Integral
Rhombus