1. Word List: quad-
quad- = four

2. a plane figure in geometry that has four sides (including square, rectangle, rhombus, parallelogram, and trapezoid)

3. quadrilateral
a plane figure in geometry that has four sides (including square, rectangle, rhombus, parallelogram, and trapezoid)

4. the ability to speak four languages

5. quadrilingual
the ability to speak four languages

6. one out of four equal parts of a circle; one section of a four-section coordinate grid

7. quadrant
one out of four equal parts of a circle; one section of a four-section coordinate grid

8. a collection or group of four; one of four babies born from the same mother at the same time

9. quadruplet
a collection or group of four; one of four babies born from the same mother at the same time

10. a muscle group consisting of four muscles that is located along the front of the thigh

11. quadriceps
a muscle group consisting of four muscles that is located along the front of the thigh

12. a four -sided enclosure, usually surrounded by buildings

13. quadrangle
a four -sided enclosure, usually surrounded by buildings

14. happening every four equal years
Presidential elections are every four years. The next presidential election is 2016.
Olympics happens every four years.

15. quadrennial happening every four equal years
Presidential elections are every four years. The next presidential election is 2016.
Olympics happens every four years.

16. an animal with four feet

17. quadruped
an animal with four feet

18. to create four times as much or as many of something

19. quadruple
to create four times as much or as many of something

20. to cut or divide into four equal parts

21. quadrisect
to cut or divide into four equal parts