Dunkirk - Student Encyclopedia (Ages 11 and up) An important commercial seaport, Dunkirk lies in the extreme north of France on the Strait of Dover. In the evacuation of Dunkirk, one of the great actions of World War II, the town was demolished, but much of it had been rebuilt by 1953.
A line segment is a part of a line that is bounded by two distinct end points and contains every point on the line between its end points. Depending on how the line segment is defined, either of the two end points may or may not be part of the line segment.
Oval - Projective geometry. 1  In the theory of projective planes, an oval is a set of n + 1 points in a projective plane of order n, with no three on a common line (no three points are collinear). 2  An ovoid in the finite projective geometry PG (3,q) is a set of q2 + 1 points such that no three points are collinear.