Tennis Ball Seam
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This example demonstrates the construction of the seam on a tennis ball surface. Core mathematical concepts include surface, differential calculus, circumcircle, triangles, and cone. Construction highlights the use of GeoGebra commands CurveCartesian, Sphere, LaTeX and objects a, b, c, d, e, and text object testo1. Suitable for high school and above students learning solid geometry and calculus applications.
GeoGebra Commands & Parameters
CurveCartesian((a * cos(t)) + (b * cos((3 * t))), (a * sin(t)) - (b * sin((3 * t))), ((2 * sqrt((a * b))) * sin((2 * t))), t, 0, 6.283185307179586) → dSphere((0, 0), a + b) → eLaTeX(d, false, false) → testo1