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High School Geometry
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Demonstrations 181  200 of 309
Pythagorean Analogs for Similar Triangles
Wittenbauer's Parallelogram
Three Points Determine a Circle
Circumcircle and Incircle of a Triangle
Common Methods of Estimating the Area under a Curve
Two Points Determine a Line
Pythagorean Means
Unfolding a Cone
Reflection in Two Dimensions
Optics: Law of Reflection
How Tall Is That Building?
Simple Stair Calculator
Indestructible Perpendicular Lines
Hippias Quadratrix
Dissection Fallacy
Carnot's Theorem
Playing with Stellations of the Icosahedron
Watt's Curve
Triangles in the Coordinate Plane
Kaleidoscopic Polygons
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