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三角形的构成
Forfatter
孟宝兴
Emne:
Trekanter
GeoGebra
GeoGebra
Nye Materialer
兩組對邊相等的四邊形
判斷球體
找出對稱軸
算柱 (兩位數)
三位數除以一位數（一）
Opdag Ressourcer
整數或分數÷分數_ 工作紙（一）_題3c
廣義角的代換(180,360)
八卦限
直角坐标系与极坐标系的转换
Quiz on Solving One-step Linear Equations (1)
Udforsk emner
Funktioner
Cirkel
Plane figurer eller former
Multiplikation
Koordinates