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Homework Answers 1. 240 cm 2 2. 26.79 in 2 3. 20.3 m 2 4. 11.2 7. 14 m 2 8. 13.5 yd 2 9. 3 ft 2 11. 4 in 12. B 13. 14 cm 17. 15 units 2 18. 6 units 2.

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Presentation on theme: "Homework Answers 1. 240 cm 2 2. 26.79 in 2 3. 20.3 m 2 4. 11.2 7. 14 m 2 8. 13.5 yd 2 9. 3 ft 2 11. 4 in 12. B 13. 14 cm 17. 15 units 2 18. 6 units 2."— Presentation transcript:

1 Homework Answers cm in m m yd ft in 12. B cm units units 2

2 Areas of Trapezoids, Rhombuses and Kites Math 2 - Lesson 78 Mr. Lopez

3 Area of Trapezoid The area of a trapezoid is half the product of the height and the sum of the bases. The bases are the parallel sides of the trapezoid. The height is an altitude from one base to the other. Area = ½(base1 + base2) x height base 1 base 2 height

4 Practice Approximate the area of Arkansas using the trapezoid shown. 190 miles 250 miles 242 miles 260 miles

5 More Practice What is the height of the trapezoid if its bases are 12 cm and 15 cm with an area of 272 cm 2 ? Round to nearest whole number. What is the area of the following isosceles trapezoid ABCD? Round to nearest tenth 5m 7m 60

6 Area of a Rhombus or Kite The area of a rhombus or a kite is half the product of the lengths of its diagonals. Area = ½d 1 d 2 d1d1 d2d2 Rhombus d1d1 d2d2 Kite

7 Practice Find the area of kite KLMN Find the area of Rhombus ABCD


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