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量角器
Author:
lahok.kolas
GeoGebra
New Resources
算柱 (兩位數)
異分母分數減法
兩組對邊相等和有直角的四邊形
第八周作业
三位數除以一位數（一）
Discover Resources
教學－與直線有關的角
翻轉方塊(單開)
gjc096a19 平行四邊形內截兩扇形
畫圓
科赫雪花動態版 (Koch Snowflake)
Discover Topics
Power Functions
Random Variables
Arithmetic Mean
Intersection
Means