Finding the area of a trapezoid 6.G.A.1 Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles.

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Presentation transcript:

Finding the area of a trapezoid 6.G.A.1 Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of solving real-world and mathematical problems.

Do NOW Memory Box – Area formula

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

12 cm 10 cm11 cm 9 cm Example. Find the area of the figure by drawing a diagonal and splitting it into two triangles. 12 cm 10 cm11 cm 9 cm click to reveal

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

Try These. Find the area of the figures using the formula. 12 ft 9 ft 7 ft 8 ft ft 786 click to reveal

Closure  Explain in words two ways to find the area of a trapezoid. Be sure to use visuals to support your writing.