Except for the special case of a rectangle, a parallelogram must have two acute angles.
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1 acute angle = 1 acute angle
An acute angle is an angle less than 90°. So an angle of 17° is an acute angle.
It is sometimes true that a parallelogram has a right angle.
Acute angle = <90 degrees Right angle = 90 degrees Obtuse angle = >90 degrees To answer your question, obtuse angle is larger.
yes. to be and acute angle, all angles must be acute. Obtuse angles only one angle has to be obtuse. Right angles only need one too. Acute has to have every angle to be acute, if one angle is obtuse or right, it's automatically no an acute Angle anymore.