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Triangles
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Demonstrations 121  140 of 469
The Centroid, Circumcenter, and Orthocenter Are Collinear
Complex Product and Quotient Using Similar Triangles
Triangle Calculator
Sliding to the Fermat Point
Rotating Polygons
nSectors of the Angles of a Triangle
Approximate Area and Circumference of a Circle Using Isosceles Triangles
Thales's Theorem: A VectorBased Proof
ConstantSum Figures
Four Lines and Four Circumcircles
The Malfatti Squares
Ball Bearings
Twin and Nearly Twin Pythagorean Triples
The Fuhrmann Circle
Pythagorean Primitive Triples Using Primes
Pythagorean Theorem
How Many Right Triangles Can You Find?
The Medians of a Triangle Divide It into Three Smaller Triangles of Equal Area
Trisectors and Circumcircles
Pompeļu's Theorem
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