It needs only 2 triangles to construct a parallelogram
Chat with our AI personalities
2
Infinitely many.
If it is a rectangle, then all its angles are 90 degrees and it is a parallelogram!
A parallelogram has four vertices- it's a quadrilateral.
A rectangle is a parallelogram, but a parallelogram is not necessarily a rectangle. This is because a parallelogram can be so many other things, like a rhombus or a square.