answersLogoWhite

0

A Plane triangle cannot have parallel sides.

A triangle on a sphere, represented in Mercator projection may do so, but that still does not make it so, for that is in spherical geometry.

And there are other geometries than Euclidean (plane).

Hyperbolic Geometry and Elliptic Geometry are the names of another two.

These geometries are consistent within themselves, but some of the theorems in Euclidean geometry have different answers in these alternate geometries.

User Avatar

Wiki User

14y ago

What else can I help you with?