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**Finding the area of a Trapezoid**

SWBAT find the area of a trapezoid by decomposing it into two triangles and using the formula.

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Do Now 1. What is the formula for the area of a rectangle? Provide an example. 2. What is the formula for the area of a parallelogram? Provide an example. 3. What is the formula for the area of a triangle? Provide an example.

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Vocabulary -Trapezoid: a 4-sided flat shape with straight sides that has a pair of opposite sides parallel. - Decomposing: breaking a shape up into two other shapes (Ex: a trapezoid into 2 triangles) Review: What does parallel mean? How do we measure height?

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Area of a Trapezoid Draw a diagonal line to break the trapezoid into two triangles. Find the area of each triangle Add the area of each triangle together See the diagram below. 10 in 12 in 5 in

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click to reveal Example. Find the area of the figure
by drawing a diagonal and splitting it into two
triangles. 12 cm 10 cm 11 cm 9 cm 12 cm 10 cm 11 cm 9 cm

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**The Area (A) of a trapezoid is also found by using the formula:**

Note: The base & height always form a right angle! 10 in 12 in 5 in

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**Find the area of the figures using the formula.**

Try These. Find the area of the figures using the formula. 12 ft 10 8 ft 7 ft 8 ft 7 6 8 13 9 ft click to reveal click to reveal

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Exit Ticket: Explain in words two methods to find the area of a trapezoid. Include visuals.

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**Who did Ms. Dalton meet this weekend?**

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