Question

i am a parallelogram. i have no obtuse angles.

Explanation:

Step1: Recall parallelogram properties

A parallelogram has opposite sides parallel and equal.

Step2: Analyze angles in different shapes

• The green shape is not a parallelogram.
• The red parallelograms have obtuse angles (in a non - rectangle parallelogram, adjacent angles are supplementary, so if one is acute, the other is obtuse).
• A rectangle (the blue shape) is a parallelogram. In a rectangle, all angles are right angles ($90^{\circ}$), and there are no obtuse angles ($> 90^{\circ}$).

Answer:

The blue rectangle.