Question

i am a parallelogram. i have 2 acute angles.

Explanation:

Step1: Recall parallelogram properties

A parallelogram has opposite sides parallel and equal. Also, in a parallelogram, consecutive angles are supplementary ($\angle A+\angle B = 180^{\circ}$).

Step2: Analyze angles in different shapes

• Square (red): All angles are right angles ($90^{\circ}$), so no acute angles.
• Trapezoid (lower - left green): It is not a parallelogram (only one pair of parallel sides in a trapezoid).
• Rectangle (lower - right green): All angles are right angles ($90^{\circ}$), so no acute angles.
• Parallelogram (upper - left green): Let the angles be $\angle A$ and $\angle B$. Since it is a parallelogram, if we assume $\angle A<90^{\circ}$ (acute), then $\angle B = 180^{\circ}-\angle A>90^{\circ}$ (obtuse). A parallelogram has two acute and two obtuse angles (except for rectangles and squares which are special cases of parallelograms with right angles).

Answer:

The green parallelogram (upper - left one)