Two.
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Except for the special case of a rectangle, a parallelogram must have two obtuse angles.
A pair of each. Unless it is a rectangle, in which case it has none.
It has two obtuse angles
There are no right angles in a parallelogram. A parallelogram only has right angles if it is a rectangle, in which case it has exactly four.
Parallelogram have 4 right angles. (because, square and rectangle is also parallelogram)