The best replacement for parallelogram is rhombus.

The best alternatives to parallelogram are rated as following:

★★★★★	rhombus
★★★★	rectangle
★★	trapezoid
★	quadrilateral
	rhomboid

Your alternative for parallelogram is not listed? Suggest!

Speaking about parallelogram, one probably shouldn't forget about four equal sides.

Other search terms related to parallelogram and their ratings are:

★★★★★	four equal sides
★★★	all sides congruent
★	4 equal sides
	4 equal sides but no right angles
	two adjacent sides congruent

You have in mind a companion for parallelogram and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of parallelogram in all years. Click on graph for more.

parallelogram

rhombus

rectangle