Objective: To find the area of a trapezoid.

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Objective: To find the area of a trapezoid. Chapter 7 Lesson 4 Objective: To find the area of a trapezoid.

height of a trapezoid: the perpendicular distance h between the bases. Leg Leg h b2 Base Theorem7-10: Area of a Trapezoid The area of a trapezoid is half the product of the height and the sum of the bases. b1 h b2

Example 1: Find Area of a Trapezoid Find the area of a trapezoid with height 7 cm and bases 12 cm and 15 cm.

Example 2: Find Area of a Trapezoid Find the area of a trapezoid with height 18 cm and bases 20 cm and 36 cm.

Example 3: Finding Area Using a Right Triangle Find the area of the trapezoid. Leave your answer in simplest radical form. 5cm 5cm Since you do not have the height of the trapezoid we will have to draw it in. h 60° 7cm 2cm 5cm Find h. Find area.

Example 4: Finding Area Using a Right Triangle Find the area of the trapezoid. Leave your answer in simplest radical form. 11cm Since you do not have the height of the trapezoid we will have to draw it in. h 60° 5cm 16cm 11cm Find h. Find area.

Assignment Page 376-377 #1-13;21;22;24-28