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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
Rose Curve - A Classical Construction
Combine shapes
Simplifying Radicals: Geometric Thin Slice
Angles and Intersecting Lines: Quick Investigation
Slope Field (1)
Discover Resources
Quadratic curves and Equations Set 5 h&k small
Duality with triangles, hexagons, squares, dodecagons
TimeLines01
test
Circles (Theorems)
Discover Topics
Cuboid
Isosceles Triangles
Parallelogram
Symmetry
Vectors