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Angles associated with Parallel Lines 三線八角
Author:
Hui Sir
GeoGebra
New Resources
龙形曲线-分形龙
异形操场
龙形曲线-分形龙2
直線的斜率：水平變化 & 鉛垂變化
盈利與虧蝕
Discover Resources
孔明棋 (Peg Solitare)
test geogebra 5.0
正弦定理
gjh-h01-01 畢氏數三角形
劉徽的「割圓術」的副本
Discover Topics
Circumcircle or Circumscribed Circle
Straight Lines
Ellipse
Percentages
Pythagoras or Pythagorean Theorem