1. Quad (four)

2. Quadrangle (N) An Enclosure – With 4 sides – Surrounded by buildings The 4 th and 5 th grade students ate their feast in the quadrangle.

3. Quadrant (N) A part – Of 4 sections A circle A grid Please pick the quadrant with the correct answer.

4. Quadrennial (Adj) Happening – Every 4 years The Summer Olympics are quadrennial.

5. Quadriceps (N) A muscle group – With four muscles – Along the front of the thigh After the walk-a-thon, my quadriceps were killing me.

6. Quadrilateral (N) A plane figure – With 4 sides Square Rectangle Rhombus Parallelogram Trapezoid We will discuss the different quadrilaterals in math class.

7. Quadrilingual (Adj) Ability – To speak 4 languages My friend, Alicia, is quadrilingual;she speaks Spanish, French, Chinese and English.

8. Quadrisect (V.) To cut – Into 4 pieces The doctor was able to quadrisect the pill.

9. Quadruped (N) A thing – With four legs I must take my quadruped for a walk around the block each day.

10. Quadruple (v) 4 times – As much of something The quadruple scope cone was hard to eat.

11. Quadruplet (V.) A group – Of 4 – One of 4 babies The beautiful quadruplet was very small at birth.