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Triangles
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Demonstrations 341 - 360 of 420
Stengel's TheoremPedal Triangles of Isogonal ConjugatesThe Two Triangles TheoremEuler's Theorem for Pedal TrianglesDistances from the Centroid
Stengel's Theorem
Pedal Triangles of Isogonal Conjugates
The Two Triangles Theorem
Euler's Theorem for Pedal Triangles
Distances from the Centroid
Six Incircles in an Equilateral TriangleMenelaus' TheoremViviani's TheoremDudeney's Cross-to-Isosceles-Right-Triangle DissectionHow the Altitude Divides the Hypotenuse
Six Incircles in an Equilateral Triangle
Menelaus' Theorem
Viviani's Theorem
Dudeney's Cross-to-Isosceles-Right-Triangle Dissection
How the Altitude Divides the Hypotenuse
Dividing a Right Triangle by the Altitude to the HypotenuseDissection of a Triangle to Its Mirror Image IIDissection of a Triangle to Its Mirror Image IThe Area of a Triangle as Half a RectangleSpieker Center Triangle Construction
Dividing a Right Triangle by the Altitude to the Hypotenuse
Dissection of a Triangle to Its Mirror Image II
Dissection of a Triangle to Its Mirror Image I
The Area of a Triangle as Half a Rectangle
Spieker Center Triangle Construction
Division of the Opposite Side by an Angle BisectorSide Lengths Opposite Unequal AnglesTriangles: Scalene, Isosceles, and EquilateralTriangles: Acute, Right, and ObtuseA Geometrical Theorem of Leibniz
Division of the Opposite Side by an Angle Bisector
Side Lengths Opposite Unequal Angles
Triangles: Scalene, Isosceles, and Equilateral
Triangles: Acute, Right, and Obtuse
A Geometrical Theorem of Leibniz

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