The best replacement for quadrilateral is quadrangle.


The best alternatives to quadrilateral are rated as following:
★★★★★  quadrangle
★★★★  parallelogram
★★★  polygon
★★  trapezium
★  trapezoid
★  rectangle

Your alternative for quadrilateral is not listed? Suggest!
Speaking about quadrilateral, one probably shouldn't forget about one pair of parallel sides.

Other search terms related to quadrilateral and their ratings are:

★★★★★ one pair of parallel sides
★★★ one line of symmetry
You have in mind a companion for quadrilateral and it is not yet here? Propose!



Google Trends

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