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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
Graphing Logarithmic Functions
Rings of circles
Pyramids to Cube
Flag in the wind
Cube of a Binomial - Volume Model
Discover Resources
Smallest square containing the circles
polynomial roots MTM3
Test 2
Geostix in GeoGebra D
Number of faces, edges and vertices of an octahedron
Discover Topics
Vectors
Hypothesis Testing
Continuity
Right Triangles
Tangent Line or Tangent