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Lens Maker's Equation
Author:
Lenore Horner
illustration of the lens maker's equation: relationship between curvatures of two surfaces of a lens and the lens' focal length
GeoGebra
New Resources
Ellipse, Hyperbola and Circle as Envelopes
van Aubel's Theorem
Construct a Square
Pelecoid
Angles and Intersecting Lines: Quick Investigation
Discover Resources
Triangle Centers
Matching Exponential Equations-Section 1.7
dilation and reflection demonstration
HF13ba
Geo1 11.3
Discover Topics
Linear Programming or Linear Optimization
Reflection
Quadratic Functions
Hypergeometric Distribution
Conditional Probability