Students learn that a parallelogram is a quadrilateral with two pairs of parallel sides, and the formula for the area of a parallelogram is base times height. For example, the area of a parallelogram that has a base of 13 inches and a height of 9 inches is 13 times 9, or 247 square inches. Students also learn that a trapezoid is a quadrilateral with one pair of parallel sides, and the formula for the area of a trapezoid is 1/2 times (base 1 + base 2) times height. For example, the area of a trapezoid that has bases of 10 centimeters and 12 centimeters and a height of 8 centimeters is 1/2 times (10 + 12) times 8, which simplifies to 1/2 times 22 times 8, or 11 times 8, which is 88 square centimeters.
We provide you thorough instruction of every step.
We`re by your side as you try problems yourself.
We test your knowledge until you`ve got it down.
We build your foundation if you`re struggling.
Lesson limit reached

Become a member

#### The learning doesn't have to stop!

Become a member
Test Prep
K12
College
Cancel
Which test are you preparing for?
Cancel