Hoover Dam Bypass Bridge

Author:MrsRusso1

Move the sliders (a, b, and c) to fit the curve to the bridge's arch. Then move points A-J onto the arch of the bridge. Now compare the equations of the parabolas. How close can you get them? Which is more accurate?

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Spherical dodecahedron/icosahedron
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Nobody Likes to Be a Semicircle
apec
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Diagonals in a Rhombus
unit circle
Bouazzaoui-Angry Bird (Graphs of Quadratic Function - Factorised Form)
Evaluating Functions Graphically
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Geometry
Standard Deviation
Perimeter
Arithmetic Mean
Trigonometry