No trapezoids are parallelograms, and no parallelograms are trapezoids.
never
Parallelograms are squares is sometimes true. Squares are parallelograms is always true. Rhomboids are parallelograms is also always true. So not all parallelograms are squares but some are.
Quadrangles that are not parallelograms = trapezoids, kites, any other polygon that is not a parallelogram
There is disagreement among authors on this. It depends on your definition of a trapezoid. A parallelogram is defined as a quadrilateral with opposite sides parallel. A trapezoid is defined as either- a quadrilateral with at least one pair of parallel sides, or- a quadrilateral with exactly one pair of parallel sides.Therefore, if you go with the former definition, yes all parallelograms are trapezoids, because all parallelograms have at least one pair of parallel sides. If you use the latter definition, no.The "at least one" definition is consistent with the trapezoid's uses in higher math, such as the trapezoidal rule for approximating integrals.You can say, however, that all trapezoids are not parallelograms.
no
no
No trapezoids are parallelograms, and no parallelograms are trapezoids.
No trapezoids are parallelograms, and no parallelograms are trapezoids.
No trapezoids are parallelograms, and no parallelograms are trapezoids.
they both have 4 sides
No trapezoids are parallelograms, and no parallelograms are trapezoids.
No. Parallelograms are never trapezoids. Trapezoids are never parallelograms.
parallelograms have two sets of parallel lines trapezoids do not
No. Trapezoids are not parallelograms at all.
No but all parallelograms are trapezoids
No, but all parallelograms are trapezoids.