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7.1 Areas of Parallelograms and Triangles

7.1 Areas of Parallelograms and Triangles. Chapter 7 Area. 7.1 Areas of Parallelograms and Triangles. Theorem 7-1 Area of a Rectangle Area = Base x Height (A = bh) or (A = lw) Theorem 7-2 Area of a Parallelogram Area = Base x Height (A=bh). Find the Area of a Parallelogram.

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7.1 Areas of Parallelograms and Triangles

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  1. 7.1 Areas of Parallelograms and Triangles Chapter 7 Area

  2. 7.1 Areas of Parallelograms and Triangles • Theorem 7-1 Area of a Rectangle Area = Base x Height (A = bh) or (A = lw) • Theorem 7-2 Area of a Parallelogram Area = Base x Height (A=bh)

  3. Find the Area of a Parallelogram A = bh 4.5 in 4 in 5 in A = bh 4.6 in 3.5 in 2 in

  4. Area of a Triangle • A = ½ bh height base

  5. Finding the Area of a Triangle A = ½ bh 13cm 5cm 12cm

  6. Structural Area • When designing a building, you must be sure that the building can withstand hurricane-force winds, which have a velocity of 73mi/h or more. The formula F = 0.004Av2 gives the force F in pounds exerted by a wind blowing against a flat surface. A is the area of the surface in square feet, and v is the wind velocity in miles per hour. • How much force is exerted by a 73mi/h wind blowing directly against the side of the building shown. 6ft 12ft 20ft

  7. Practice • Pg 351 1-14

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