Area of a Trapezoid

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Lesson Objective
In this lesson, we will learn about the area of a trapezoid.
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About This Lesson
In this lesson, we will:
  1. Learn about the formula for the area of a trapezoid.
  2. See an example on using the formula to find the trapezoid's area.
  3. See another example on using the formula to find the height of a trapezoid.
The study tips and math video below will explain more.
a trapezoid

Study Tips

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Tip #1
A trapezoid has four sides where two sides are parallel to each other. The height of the trapezoid is perpendicular to the parallel sides. These are shown on the right.

Now, if a trapezoid has the height h and two parallel sides a and b, the area A, of the trapezoid will be:
area of a trapezoid formula
a trapezoid with 2 parallel sides
a trapezoid with the height h and 2 parallel sides, a and b.

The math video below will give more explanation on this. Also, we will see some examples on how to use this formula.

Math Video

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Lesson Video
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Math Video Transcript

Practice Questions & More

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Multiple Choice Questions (MCQ)
Now, let's try some MCQ questions to understand this lesson better.

You can start by going through the series of questions on the area of a trapezoid  or pick your choice of question below.
  1. Question 1 on finding the area of a trapezoid
  2. Question 2 on finding the height of a trapezoid 
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