π Explore this awesome post from Hacker News π π Category: π Hereβs what youβll learn: Spherical geometry In spherical geometry, the interior angles of a triangle add up to more than Ο. And in fact you can determine the area of a spherical triangle by how much the angle sum exceeds Ο. On a sphere of radius 1, the area equals the triangle excess Area = E = interior angle sum β Ο. Small triangles have interior angle sum near Ο. But you could, for example, have a triangle with three right angles: put a vertex on the north…
