An acute angle is less than 90 degrees. Therefore, as a rectangle has 4 right-angles (90 degrees) there are no acute angles.
A parallelogram has 0 or 2 acute angles. If the parallelogram happens to have four right-angled corners, it is still a parallelogram (and a rectangle), but no acute angles.
None because a rectangle has 4 interior right angles
4
It has 2 pairs of opposite equal angles which are acute and obtuse.
A pair of each. Unless it is a rectangle, in which case it has none.
There are no acute angles in a rectangle which has 4 equal interior right angles
2
3
Two (or none, if it is a rectangle).
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A parallelogram has 0 or 2 acute angles. If the parallelogram happens to have four right-angled corners, it is still a parallelogram (and a rectangle), but no acute angles.
None. They are all right angles.
None because a rectangle has 4 interior right angles
4
It has 2 pairs of opposite equal angles which are acute and obtuse.
Parallelograms have 2 acute and 2 obtuse angles, or 4 right angles in the case of a rectangle. But either way, the max number of acute angles is 2 and the minimum is zero. Remember acute angles is less than 90 degrees so in a square or rectangle, which is a parallelogram since it has two sets of parallel sides, there are NO acute angles. So the answer to the question is..it depends, but no more than two for sure.
none all it has is right angles