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折扣 例2
Author:
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
四邊形的特性
GeoGebra笔记功能体验课件
算柱 (兩位數)
Discover Resources
中國剪紙技術_蝴蝶花
平行四边形平移
三角形的外心
半圆的滚动
小正多边形在大正多边形内的滚动（边长不相等）
Discover Topics
Variance
Trigonometric Functions
Power Functions
Unit Circle
Sequences and Series