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Geometry
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Demonstrations 3341 - 3360 of 3914
A Parallelogram Defined by the Centers of Four Incircles
A Relation between the Areas of Four Triangles
Three Subtriangles of a Triangle
A Triangle and an External Contact Triangle
Two Polyhedra with D2 Symmetry
Contact Triangles of a Triangle
The Topology of Costa's Minimal Surface
Dissecting an Octagon into Four Smaller Octagons
Tangents to an Excircle
Dissecting a Decagon into Two Pentagons and Two Pentagrams
Two-Octagons-into-One Dissection in Two Steps
Freese's Two-Octagons-into-One Dissection
Any Quadrilateral Can Tile
Dissection of a Cube into Five Solids
Proposition 3, Book XII, Euclid's Elements
Normed Line
Cube Net or Not
Lines Parallel to the Sides of a Triangle
Lebesgue 3D Curves
Cassini Ovals and Other Curves
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