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蝴蝶定理推廣證明2(交比)
Author:
連琨銘
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
球体的体积推导（优化版）
【案例】2018年全国1卷理科12题
找出對稱軸
Discover Resources
TOPVINKEL
優良作品2
讀量杯上的刻度
作线段和角
算盘
Discover Topics
General Quadrilateral
Linear Regression
Pie Chart or Circle Chart
Trigonometric Functions
Volume