Question

1. which property is always true for a parallelogram? all sides are equal opposite sides are parallel diagonals are perpendicular all angles are right

Explanation:

A parallelogram is defined as a quadrilateral with both pairs of opposite sides parallel. "All sides are equal" applies only to rhombuses (a subset of parallelograms), "diagonals are perpendicular" applies to rhombuses, and "all angles are right" applies to rectangles (another subset). The only universal property is opposite sides being parallel.

Answer:

Opposite sides are parallel