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Ngôi sao
Author:
Lâm Minh Huy
GeoGebra
New Resources
Angles and Intersecting Lines: Quick Investigation
Piano. Keyboard.
Isosceles Triangle: Quick Construction
van Aubel's Theorem
Viviani's Window
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robot
curstab...
Renteria, B perpendicular Line
G9 Ch.9 Lines and Centres of a Triangle
Pythagoras_