.
True
False
True
False
True
False
True
False
Two lines that are perpendicular to the same line are parallel to each other.
A great circle is finite and returns to its original starting point.
An arc of a great circle is the shortest path between two points.
There is a unique great circle passing through any pair of nonpolar points.
True
False
True
False
Great circle
Sphere
Arc of a great circle
Triangle
True
False
6
4
8
True
False
True
False