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Warm Up Locus Problem in GIHK workshop (Oct 13, 2012)
Author:
Arthur Lee
Investigate locus of orthocentre when one vertex moves on a fixed circle.
GeoGebra
New Resources
繪畫垂直線
Pythagorean Theorem: Quick Illustrator
Perpendicular Lines: Quick Exploration
Linear Equation Graphs: Thin Slice
What Do You See?
Discover Resources
perpendiclar bisector
Trig Value Chart by 15°
parabula10
Spherical Aberration (23 October 2017)
Quadratic_Function parameters change a, b and c
Discover Topics
Sequences and Series
Real Numbers
Trapezoid
Functions
Cuboid