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Izidor. Hafner
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Demonstrations 521  540 of 841
Using a Nomogram
Clairaut's Angle Trisection
Descartes's Angle Trisection
Du Plantier's Square Root Extractor
Dissection of the Great Rhombicosidodecahedron into Prisms
Incommensurability of the Base and Leg in an Isosceles Triangle
Noble's Square Root Calculator
Vernier Scale
Cissoid of Diocles
Mazes on a Cylinder or Torus
Rolling One Parabola on Another
Find the Angle Measure in a Regular Polygon, Part 2
Theobald's Dissection of an Octagon into a Triangle
Function Identification Game
Circular Slide Rule
Graham's Square Root Extractor
Polar Maze
Mazes on a Cone, Including Its Base
Geometric Problems of Antiquity
Generalized Trisection Construction
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