Level 139 Level 141
7 words 0 ignored
Ready to learn Ready to review
Check the boxes below to ignore/unignore words, then click save at the bottom. Ignored words will never appear in any learning session.
A polygon with 4 sides and 4 angles.
four sides; opposite sides congruent and parallel
four congruent sides; all angles are right angles
four sides; opposite sides are congruent and parallel
four congruent sides; opposite sides parallel; opposite angles congruent
four sides; exactly one pair of opposite sides parallel
sum of angles in quadrilaterals