54. Suppose an airplane makes stops in a triangular pattern starting at the North Pole, then directly south to City A on the equator, then straight East to City B which is also on the equator, and lastly straight North back to the North Pole. What is the sum of the angles formed by the path of this plane? A. exactly 90 B. less than 180 C. exactly 180 D. more than 180 55. Which statement uses the definition of parallel lines to accurately describe the differences between Euclidean and spherical geometries? A. In Euclidean geometry, parallel lines do not intersect and are a fixed distance apart. In a spherical geometry all parallel lines intersect at 90 angles. B. Euclidean geometry, parallel lines do not intersect and are a fixed distance apart. In a spherical geometry there are no parallel lines because any two great circles intersect at two points. C. In Spherical geometry, parallel lines do not intersect and are a fixed distance apart. In a Euclidean geometry there are no parallel lines because any two great circles intersect at two points. D. In Euclidean geometry, parallel lines do not intersect and are a fixed distance apart. In a spherical geometry there are no parallel lines because any two great circles intersect at infinitely many points