The answer depends on what shape the question is about.
square
A Square!
Yes, a parallelogram has four sides and four internal angles, the opposite side lengths are equal and the opposite angles are equal.
Quadrilaterals
Yes
Equilateral
yes opposite angles are equal
Any parallelogram, including rhombus, but not including rectangle or square.
Clockwise from 'a' it will be at the bottom right hand side and it will have 4 equal sides with 2 equal opposite acute angles and 2 equal opposite obtuse angles.
In an isosceles trapezoid, the opposite angles are equal. Specifically, the angles adjacent to each of the bases are congruent; that is, the angles on the same side of the trapezoid are equal to each other. Therefore, if one angle measures ( A ), the angle directly opposite it will also measure ( A ), while the other two angles will also be equal, forming a pair of equal angles on each base.
NOImproved Answer:-Yes a rhombus has equal opposite acute angles and equal opposite obtuse angles
A parallelogram has 2 equal opposite acute angles and 2 equal opposite obtuse angles.