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文字工具：設定旋轉文字位置
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
四邊形的特性
柱體建築師
兩組對邊相等的四邊形
判斷球體
找出對稱軸
Discover Resources
百分數（小學）：折扣 / 賺賠（Java 版）
Introduce Tangent Ratio
Ｍy GGC-1
橢圓2--四圓心近似法
中國火柴遊戲二的副本
Discover Topics
Trapezoid
Expected Value
Mathematics
Frequency Distribution
Logic