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Plane Geometry
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Demonstrations 21  40 of 1285
Euclid 1.47 Animated
The Extouch and Intouch Triangles of a Triangle
Refraction in a Triangular Prism
33. Construct a Triangle Given Its Base, Altitude to the Base and Product of the Other Two Sides
A Construction of the Square Root of Seven
Geometric Construction of the Square Roots of a Complex Number
Refraction through a Ball
Refraction in a Biconvex Spherical Lens
Constructing the Harmonic Mean 2
Graphical Solution of a Quadratic Equation Using the Arithmetic and Geometric Mean
Graphical Solution of a Quadratic Equation Using a Result from Optics
Constructing the Harmonic Mean 1
Minkowski Linear Combinations of Two Line Segments
Reflection in a Parabolic Mirror
Reflecting inside a Spherical Mirror and a Catacaustic
35. Construct a Triangle Given the Angle Opposite Its Base and the Sum and Product of the Two Other Sides
34. Construct a Triangle ABC Given the Length of AB and the Sum and Product of the Other Two Sides
Construct a Segment with a Given Midpoint and Endpoints on Two Given Lines
Construction of an SSA Triangle
Reflecting in a Rotating Mirror
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