Parallelogram Parallelogram In Euclidean geometry, a parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure. The congruence of opposite sides and opposite angles is a direct consequence of the Euclidean parallel postulate and neither condition can be proven without appealing to the Euclidean parallel postulate or one of its equivalent formulations. By comparison, a quadrilateral with just one pair of parallel sides is a trapezoid in American English or a trapezium in British English. The
I Just Don't Know What to Do with Myself "I Just Don't Know..." from an overnight trip to New York City where she met up with Bacharach in February 1964. The third UK single release of Springfield's solo career - following the "Brill Building" Sound-alikes "I Only Want to Be With You" and "Stay Awhile" - "I Just Don't Know What to Do with Myself" was Springfield's first UK single release to display her signature vocal style; rising to #3 in the summer of 1964 the track remained Springfield's highest charting UK hit until she reached #1 in 1966 with "You Don't Have to Say You Love Me" which