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Plane Geometry
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Demonstrations 261 - 280 of 1465
Height of Object from Angle of Elevation Using Tangent
The Apollonius Circle of a Triangle
Orthopolar Lines for a Quadrilateral
The Nine 10_3 Configurations
Test Your Spatial Visualization Abilities
Total Areas of Alternating Subtriangles in a Regular Polygon with 2n Sides
Obtuse Random Triangles from Three Points in a Rectangle
Polyhedron Faces Identification
A Line Has Constant Slope
The Sum of Opposite Angles of a Quadrilateral in a Circle is 180 Degrees
Board Inversion
Heron's Formula
Interior and Exterior Angles of Regular Polygons
Examples of Zindler Curves
Freese's Dissection of a Regular Pentadecagon into Two
Tangents to an Ellipse from a Given Point
Freese's Dissection of a Regular Decagon into Five
Freese's Dissection of a Regular Nonagon into Two
Freese's Dissection of a Regular Octagon into Nine
Freese's Dissection of a Regular Pentagon to a Square
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