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High School Geometry
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Demonstrations 141  160 of 309
Bradley's TwoTrianglestoOne Dissection
The Area of a Triangle as Half a Rectangle
Inscribed Angles That Intercept the Same Arc
Nets of Polyhedra
Tangent Circles
Division of the Opposite Side by an Angle Bisector
Equally Distant Chords
Side Lengths Opposite Unequal Angles
Tangents to a Circle
Tangent Chord Angle
Triangles: Scalene, Isosceles, and Equilateral
Triangles: Acute, Right, and Obtuse
Dintzl's Law of Cosines Dissection
Constructing a Regular Pentagon with Ruler and Compass
Centroid Hexagon
Hunger's Law of Cosines Dissection
Van Aubel's Theorem for Quadrilaterals
The Perpendicular Bisectors of a Triangle
Addition Formula for Sine
Skew Lines
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