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Area of a Trapezoid - Lesson 11-3
Today we talked about the area of a trapezoid. To find this, we started with a trapezoid (the red one), made a copy of it (the yellow one), and rotated it 180 degrees:
![Derivation of the Area of a Trapezoid - Step 1](TrapezoidAreaDerivationStep1.gif)
Next, we translated it up to form a parallelogram (the combination of both trapezoids). Using the parallelogram area formula, we were able to find a formula for the area of the trapezoid:
![Derivation of the Area of a Trapezoid - Step 2](TrapezoidAreaDerivationStep2.gif)
We then defined a median of a trapezoid and learned about two of its properties:
![Definition & Properties of the Median of a Trapezoid](TrapezoidMedian.gif)
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