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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
Proving Triangles Congruent (2): One Step Transformations
Constructing an Isosceles Triangle with Given Side + Activities
Constructing an Inscribed Equilateral Triangle + Activities
task1_lightBulb
Monge's Theorem
Discover Resources
Inner and outer approximation by a quadrilateral
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Factoring trinomials
Anthony Walsh GeogebraPractice1718
Counter example
Discover Topics
Plane Figures or Shapes
Subtraction
Sequences and Series
Mathematics
Quadrilaterals