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Area Formulas for Squares, Rectangles, and Triangles

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Learn about the area formulas for squares, rectangles, and triangles. Practice finding missing side lengths and solving word problems. Homework exercises included.

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Area Formulas for Squares, Rectangles, and Triangles

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  1. Do-Now

  2. Section 8.3 Area of Squares and Rectangles

  3. Area formulas • Area of a square = • Area of a rectangle = Examples: Find the area 1. 2.

  4. Find a side length The area of the rectangle is given, find the missing side length

  5. Try these Find the area of the quadrilateral • 2) 3) The area of a rectangle is 200cm2. The length is 50cm. Find the width.

  6. Word problems

  7. Section 8.4 Area of a Triangle

  8. Area of a Triangle ***The height must be perpendicular to the base*** Example: Find the area of the triangle.

  9. Find the area of the triangle.

  10. Practice: Find the area of each triangle.

  11. Finding the base or height Area = 42 ft2

  12. Practice: Find the missing base or height.

  13. Homework: 8.3-8.4 • P427-428, #8-12 & 20-22 evens • P434-435, #6-12 & 16-18 evens

  14. Do-Now:

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