It is neither because a triangle is a 3 sided polygon whereas a parallelogram is a 4 sided quadrilateral
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A triangle is not a quadrilateral, but a parallelogram and trapezoid are.
triangle
If you put two of ANY triangle hypotenuse to hypotenuse the shape will have 4 sides (thus a parallelogram or quadrilateral).
NO; by definition a parallelogram is a quadrilateral with two sets of parallel sides, while a triangle has 3 sides.
No because a parallelogram is a quadrilateral that has 4 sides but any triangle has only 3 sides.