You can
put this solution on YOUR website!The earth.
The base is a segment of the equator.
The sides are the meridian lines at 0 degrees and 90 degrees east.
These meridians meet at the pole (north or south) and form a 90 degree
angle. They also form a 90 degree angle where they intersect the equator.
The resulting spherical triangle has three 90 degree angles; the sum of the
angles is 270 degrees.
Cheers,
Stan H.
(