The best replacement for rectangle is square.

The best alternatives to rectangle are rated as following:

★★★★★	square
★★★	rhombus
★★	oblong
★★	round trampoline
★★	parallelogram
★	rectangular
★	inverted triangle
★	is a rectangle a square
	hourglass
	octagon softbox
	trapezoid
	quadrilateral
	rectangle
	triangle
	round table
	free form pool
	round dining table
	circle
	rectanglef
	right triangle
	rectangle a square

Your alternative for rectangle is not listed? Suggest!

Speaking about rectangle, one probably shouldn't forget about same area and perimeter.

Other search terms related to rectangle and their ratings are:

★★★★★	same area and perimeter
★	semicircle
★	length
★	yellow oval logo
	equal area and perimeter

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

Google Trends

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

rectangle

square

rhombus