rhombus
/ˈrɑmbəs/
noun
- A flat shape with four equal sides and opposite sides parallel, but with angles that are not 90 degrees.
- The child drew a rhombus on the chalkboard for the geometry lesson.
- A diamond in a deck of cards is shaped like a rhombus.
- The kite's frame formed a perfect rhombus in the sky.
Synonyms