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GeoGebra
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GeoGebra
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Double Thin-Lens Systems
Author:
Lenore Horner
GeoGebra
Use the red diamond marked Rlens to move the right (red) lens relative to the left (blue) one. Use the sliders to change the focal lengths of the lenses.
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Torus
Proof of a Rhombus by Construction and Deduction
Dividing a 3-digit number by a 1-digit number (1)
Geometric linkage
Marion's Theorem
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متوازى-
קיץ 2013
Humphries
Euclid's Proof of the Pythagorean Theorem
Square-Based Pyramid
Motion Time Graphs
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Straight Lines
General Quadrilateral
Scalene Triangles
Division
Means