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音樂會的入場人數
Author:
iedc
GeoGebra
New Resources
Nested spiral octagon
直角坐標平面上的旋轉變換
找出對稱軸
算柱 (兩位數)
幾何作圖題：切三圓（題目）
Discover Resources
正三角形內一點P, 到三頂點距3,4,5
簡單動畫
GeoGebra作圖─ＲＨＳ全等
探索金字塔高度
內心
Discover Topics
Geometric Distribution
Means
Rational Numbers
Kite
Congruence