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Demonstrations 5181  5200 of 6903
Dividing Fractions
Concurrent Lines that Intersect on the Euler Line
Collinearity of an Orthocenter, the Incenter, and the Circumcenter
Multiplying Mixed Numbers
Concurrent Line Segments Related to the Incircle
Multiplying Fractions
Projections, an Altitude, and the Orthocenter
Astronomical Units of Length
Cubic Close Packing versus Hexagonal Close Packing
Onion Polyhedra
The Generalized WeierstrassRiemann Functions
Sums of Squares of Segments Created by a Pedal Triangle
Planes, Solutions, and Gaussian Elimination of a 3×3 Linear System
Concyclic Circumcenters
The Intersections of Extended Cevians with Three Circumcircles of Subtriangles
Tangent Lines to a Conic Section
Space Filling with TrapezoidRhombic Dodecahedra and Hexagonal Close Packing
Space Filling with Rhombic Dodecahedra and Cubic Close Packing
Measuring Angles with a Protractor
Normalizing Vectors
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