Not necessarily, but it can.
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.
If it has four 90 degree angles, than it's a square, and therfore only has four angles.
Four 90 degree angles.
Four 90 degree angles in a square
a trapizoid(:? i think!!(::
Square
Rectangle.Note:It's enough to say that it has one right angle, and the result is the same.
no
Not necessarily, but it can.
parallelagram
No, a rhombus does not have four 90-degree angles. A rhombus is a quadrilateral with all sides of equal length, but its opposite angles are equal, not necessarily right angles. The sum of the interior angles of a rhombus is always 360 degrees, so each angle in a rhombus is less than 90 degrees.
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.
A parallelogram with four 90 degre angles is called rectangle.
If it has four 90 degree angles, than it's a square, and therfore only has four angles.
parallelagram
0 or 4