Compare and contrast a square and parallelogram using a Venn diagram

A square and a parallelogram both have 4 sides.

The parallelogram is slanted and the square is straight.

A square and a parallelogram both have 2 sets of parallel lines. A square has equal lengths for all four sides while a parallelogram doesn't. A parallelogram is a more broad idea because a parallelogram involves trapezoids, rectangles, and squares too. But a square is more specific.