compute the area of a triangle, or the surface area of a sphere or a regular polyhedron
triangle, sphere, or regular polyhedron
The routine area returns the area or surface area of the input object which is a triangle, a sphere, or a regular polyhedron.
The command with(geom3d,area) allows the use of the abbreviated form of this command.
Define triangle ABC with vertices A, B and C
Find the area of ABC
Define an icosahedron with center o(1,2,5) and the radius of the circum-sphere is 1
Find the surface area of ico
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