a rhombus
square
Yes. A parallelogram is defined as having opposite sides that are parallel and equal in length, and opposite angles that are equal.
trapezoid is the answer!
rhombus
Rectangle
A parallelogram, a rhombus, a square and a rectangle
Opposite sides are parallel; opposite sides are equal; opposite angles are equal.
square
trapizoid
A Square!
-- Opposite sides are parallel.-- Opposite sides are equal.-- Angles are all equal.
The practical answer is a parallelogram, which has two sets of parallel opposite sides and two sets of equal opposite angles. This includes rhombi, rectangles, and squares.A trapezoid (trapezium) has one set of parallel opposite sides that are not equal, but may have non-parallel opposite sides equal in length (isosceles trapezoid).