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Camera Obscura 2D
Author:
optowiki.info (Michael Schaefer)
New Resources
PIP Feuerbachova kružnica (c) Vozárová, Vandlíková
PIP Napoleonova veta
Net of a Cylinder
Secant Tangent
Triangle similarity: Definition, criteria and demonstrations
Discover Resources
Zeichnen mit Hilfe von Wendetangenten
PR_INVCOS
kweathers.png
UnMessUpAbleEquilateralTriangle
kugel