1. Do Now

2. 3/31/2015 9-1 D Area of Trapezoids

3. Key Concept

4. Example 1 Find the area of the trapezoid. A = 1212 h(b 1 + b 2 ) The area is 53 yd 2. A = 1212 · 4(26 ) 1 2 1 2 1212 A = · 4(14 + 12 ) 1 2

5. Example 2 Find the area of the trapezoid. The bases are 4 meters and 7.6 meters. The height is 3 meters. The area of the trapezoid is 17.4 square meters.

6. Example 2 The shape of the state of Montana resembles a trapezoid. Find the approximate area of Montana. Replace h with 285, b 1 with 542, and b 2 with 479.

7. The approximate area of Montana is about 145,493 square miles.

8. Exit Ticket

9. Homework Pg. 537 #1-24 Evens