Question

A great circle is another name for a ____________ in riemann's spherical geometry.

Answer 1

That would be a called a line

Answer 2

Lines are great circles in Riemann's spherical geometry.

Step-by-step explanation:

In plane geometry, or solid one, it is studied the figures in a plane like circle, line, polygon. In spherical geometry, instead, they deal with the figures on the surface of a sphere, in this type of geometry lines are great circles, meaning that any two lines meet in two points.