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Vertically opposite angles?
Author:
Rezuan Ibn Kassim
Topic:
Angles
GeoGebra
New Resources
Explore the invariant lines of matrix {{-2,5},{6,-9}}
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Icosahedron1
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linear systems 2x2
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Elementary Math (Sec 1 to 4) Applets
The Pythagorean theorem
Constructing the Square/Triangle Hinged Dissection
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Rhombus
Incircle or Inscribed Circle
Geometric Mean
Real Numbers
Geometric Transformations