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Plane Geometry
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Demonstrations 21  40 of 1294
Constructing a Regular Heptadecagon (17gon) with Ruler and Compass
Families of FourPoint Touching Isosceles Triangles
2. Families of FourPoint Touching Squares
Minkowski Sum of Convex Robot and Obstacle
Dissection of Two Squares into Three Squares
Families of FourPoint Touching Equilateral Triangles
Families of FourPoint Touching Squares
Dissection of Two Squares into Three Congruent Squares
Dissection of a Square into Three Squares
Golden Ratio by Paper Folding
Ellipse by Paper Folding
Constructions with Paper Folding
Points and Lines on Folded Paper
Mona Lisa and the Golden Rectangle
Generating NearIsosceles Pythagorean Triples
Eyeball Theorem
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
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