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Eccentricity and directrix of an ellipse

Author:Jonathan Holland

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Odd Function Explorer
Squaring a Rectangle (PST Version)
Isosceles Right Triangle
Calculating Arc Length, Radius, and Central Angle
Perpendicular Lines: Quick Exploration

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proj.
triangle
#5 6.11 morgan miller
Game #4
Exploring Types of Triangles

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Optimization Problems
Median Value
Line Segment
Symmetry
Differential Calculus

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