Question

which sentence is true? all parallelograms have 4 right angles. all parallelograms have 4 equal sides. all rhombuses have 2 pairs of parallel sides. all rhombuses have 4 right angles.

Explanation:

Step1: Recall parallelogram properties

Parallelograms have opposite - sides parallel. They don't always have 4 right - angles (only rectangles among parallelograms do) and don't always have 4 equal sides (only rhombuses among parallelograms do).

Step2: Recall rhombus properties

A rhombus is a parallelogram with 4 equal sides. By definition of a parallelogram, all rhombuses have 2 pairs of parallel sides. Also, not all rhombuses have 4 right - angles (only squares among rhombuses do).

Answer:

All rhombuses have 2 pairs of parallel sides.