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Geometry
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Demonstrations 2081  2100 of 2526
Tangent Chord Angle
Triangles: Scalene, Isosceles, and Equilateral
Triangles: Acute, Right, and Obtuse
A Geometrical Theorem of Leibniz
Parallelogram Slide
Double PSlide Dissection
Kelland's GnomontoSquare Dissection
Perigal's ThreeSquarestoOne Dissection
Dintzl's Law of Cosines Dissection
Spherical Product of Two Superformulas
Constructing a Regular Pentagon with Ruler and Compass
Centroid Hexagon
Hunger's Law of Cosines Dissection
Van Aubel's Theorem for Quadrilaterals
The Perpendicular Bisectors of a Triangle
Addition Formula for Sine
Curvature of the Trefoil Knot
Skew Lines
Designs by Colorful Circles
The Polar Equations of Hearts and Flowers
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