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Heron's Formula 希羅公式
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
apec
Daddy Long-Legs
JLA Copy of Eri Chan
Nobody Likes to Be a Semicircle
JLA Eri Chan
Discover Resources
triangle 1
Geogebra 7.07
TANGENTS TO A CIRCLE
brian dream house
sin_fubnction
Discover Topics
Geometry
Sine
Stochastic Process or Random Process
Arithmetic Mean
Linear Equations