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DIY Pericentric Lens from a Fresnel and an entocentric lens
Author:
optowiki.info (Michael Schaefer)
GeoGebra
New Resources
Math Art Construction
Drunk Parabola
Traffic Cone
Angles of Intersecting Lines
Graph of y = a(x − h)² + k
Discover Resources
Pythagoras' Theorem
AGH1T2
Incenter Task
lesson plan for pyramid 2077-5-14
Discover Topics
Fractions
Confidence Interval
Differential Calculus
Indefinite Integral
Cone