One of them.
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Right angles have 90 degrees.
There are 90 degrees in a right angle and 3.5*90 = 315 degrees
It is not a requirement that any of the angles are right angles (90 degrees), to qualify as a parallelogram.
Acute angles are less than 90 degrees. Obtuse angles are greater than 90 degrees. Right angles are 90 degrees.
There are 10 right angles of 90 degrees altogether