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Ruler
Author:
Anthony OR 柯志明
Drag the ruler to move. Drag the red point to rotate. Use the slider to adjust the length.
GeoGebra
Anthony Or GeoGebra Institute of Hong Kong
New Resources
Dodecahedron
Construct a Conic
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Blancmange curve (fractal)
Poorly Drawn Parallelograms 3
Discover Resources
Introduction to Functions 3
Find tan from sin
Cylinder Pyramid
H Perpendicular Bisector
₂ΛM 1: Lagrange Multipliers with One Constraint. Examples
Discover Topics
Parabola
Hyperbola
Root
Kite
Fractal Geometry