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Demonstrations 1  20 of 166
Dissecting a Regular 2ngon into Four Smaller 2ngons
New this month
Rectangles Reasonably Close to a Given Area
Triangle Radicals
Representations of Trigonometric and Hyperbolic Functions in Terms of Sector Areas
Halving a Triangle
Slicing a Sphere along Two Parallel Planes
Benford's Law and Data Spread
Area of a Triangle in the Poincaré Disk
Ratios of the Areas of an Internal Hexagon to Its Star to the External Hexagon
The Ellipse Problem of Steinhaus
How the Area of a Disk Grows
Making the Three Areas Defined by Congruent Overlapping Circles Equal
Volume and Surface Area of the Menger Sponge
Cumulative Area under a Cycloid versus the Area of Its Rolling Circle
Volume and Surface Area of the Intersection of Two Spheres
Gardner's Problem
Signed 2D Triangle Area from the Cross Product of Edge Vectors
Monte Carlo Estimation of Area
Dividing a Circle with HalfCircles
Length of an Arc of an Ellipse and the Area It Subtends
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