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This lesson focuses on the concept of finding the area of a parallelogram, illustrated through a series of examples. Students will learn to apply the formula A = bh (Area = base × height) using different base and height values. Real-world scenarios will demonstrate the relevance of this concept, such as calculating the area for farming fields or designing walkways. The lesson concludes with a five-minute check to assess understanding of the material covered. Get ready to grasp the essential skills in measuring areas effectively!

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  1. Splash Screen

  2. Five-Minute Check (over Chapter 10) Main Idea and Vocabulary Key Concept: Area of a Parallelogram Example 1: Find the Area of a Parallelogram Example 2: Find the Area of a Parallelogram Example 3: Real-World Example Lesson Menu

  3. Find the areas of parallelograms. • base • height Main Idea/Vocabulary

  4. KC 1

  5. Find the Area of a Parallelogram Find the area of the parallelogram. EstimateA = 8 ● 6 or 48 cm2 A = bh Area of a parallelogram A = 7.5● 6.4 Replace b with 7.5 and h with 6.4. A = 48 Multiply. Answer: The area of the parallelogram is 48 square centimeters. Example 1

  6. A B C D Find the area of the parallelogram. A. 13 in2 B. 26 in2 C. 52 in2 D. 208 in2 Example 1

  7. Find the Area of a Parallelogram Find the area of the parallelogram. The base is 8 centimeters, and the height is 4.5 centimeters. EstimateA = 8 ● 5 or 40 cm2 Example 2

  8. Find the Area of a Parallelogram A = bh Area of a parallelogram A = 8● 4.5 Replace b with 8 and h with 4.5. A = 36 Multiply. Answer: The area of the parallelogram is 36 square centimeters. Example 2

  9. A B C D Find the area of the parallelogram to the right. A. 5.4 m2 B. 10.8 m2 C. 10.92 m2 D. 13.81 m2 Example 2

  10. FARMING A farmer planted the three fields shown with rice. What is the total area of the three fields? Find the area of one of the fields and then multiply that result by 3. A = bh Area of a parallelogram A = 56.7● 75 Replace b with 56.7 and h with 75. A = 4,252.5 Multiply. Example 3

  11. Answer:The area of one of the fields is 4,252.5 square meters. So, the area of the three fields together is 3 ● 4,252.5 or 12,757.5 square meters. Example 3

  12. A B C D LANDSCAPING Sue is designing a new walkway from her back patio to a garden. She is using stones that are shaped as parallelograms to create the walkway. Each of the stones has a base of 18 inches and a height of 24 inches. It takes 30 stones to complete the walkway. What is the total area of the walkway? A. 720 in2 B. 1,250 in2 C. 7,348 in2 D. 12,960 in2 Example 3

  13. End of the Lesson End of the Lesson

  14. Five-Minute Check (over Chapter 10) Image Bank Math Tools Area of Trapezoids Drawing 3-D Figures Area of Polygons Resources

  15. A B C D (over Chapter 10) Find the value of x in the figure. A. 147 B. 123 C. 57 D. 33 Five Minute Check 1

  16. A B C D (over Chapter 10) Classify the triangle by its angles and by its sides. A. acute; isosceles B. isosceles; obtuse C. obtuse; isosceles D. acute; scalene Five Minute Check 2

  17. A B C D (over Chapter 10) Find the values of x in the pair of similar figures. A.x = 28 cm B.x = 13.65 cm C.x = 7 cm D.x = 1.75 cm Five Minute Check 3

  18. A B C D (over Chapter 10) Triangle NLR has vertices N(2, 2), L(1, 4), and R(1, 2). If Triangle N'L'R' has vertices N'(–2, 2), L'(–1, 4), and R'(–1, 2), what type of reflection was performed on triangle NLR? A.ΔNLR was reflected over the x-axis. B.ΔNLR was reflected over the y-axis. C.ΔNLR was reflected over both axes. D.ΔNLR was not reflected. Five Minute Check 4

  19. End of Custom Shows

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