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Plane Geometry
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Demonstrations 1281 - 1300 of 1465
Secant Intersection with Two Internally Tangent Circles
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
Lindgren's Two-Triangles-to-One Dissection
Quadrilateral Slide
Bradley's Two-Triangles-to-One Dissection
The Area of a Triangle as Half a Rectangle
Inscribed Angles That Intercept the Same Arc
Interactive Rings Tessellation
Loyd's Two-Greek-Crosses-to-a-Square Dissection
Pappus Chain
Poincaré Hyperbolic Disk
Spieker Center Triangle Construction
Tangent Circles
Division of the Opposite Side by an Angle Bisector
The Eyeball Theorem
Equally Distant Chords
Side Lengths Opposite Unequal Angles
Determinants Seen Geometrically
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