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convex lense - principal focus
Author:
Krishnan MP
GeoGebra
New Resources
Linear Cross Section Exercise
Introduction
Cross Product in 2D and 3D
Ellipse as Envelope - Correspondence Method
Pelecoid
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AshS
Translation screensave
Quick-return Mechanisms
Proof Without Words: Hunger's Law of Cosine Dissection
Hur många rötter a
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Cube
Differential Calculus
Perimeter
Isosceles Triangles
Combinatorics