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C. trapezoid. D. isosceles trapezoid. The shape above has exactly one pair of parallel sides, so you can rule out parallelogram and kite as possible classifications. The shape is definitely a trapezoid because of the one pair of parallel sides. For a shape to be an isosceles trapezoid, the other sides must be congruent.
1 A parallelogram has rotational symmetry of order 2 (through 180Â°). 2  If it also has two lines of reflectional symmetry then it must be a rhombus or an oblong. 3  The perimeter of a parallelogram is 2(a + b) where a and b are the lengths of adjacent sides.