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

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Splash Screen

Lesson Menu 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

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

KC 1

Example 1 Find the Area of a Parallelogram Find the area of the parallelogram. Estimate A = 8 ● 6 or 48 cm 2 Answer: The area of the parallelogram is 48 square centimeters. A=bh Area of a parallelogram A=7.5 ● 6.4Replace b with 7.5 and h with 6.4. A=48Multiply.

1.A 2.B 3.C 4.D Example 1 A.13 in 2 B.26 in 2 C.52 in 2 D.208 in 2 Find the area of the parallelogram.

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

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

1.A 2.B 3.C 4.D Example 2 A.5.4 m 2 B.10.8 m 2 C m 2 D m 2 Find the area of the parallelogram to the right.

Example 3 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 ● 75Replace b with 56.7 and h with 75. A=4,252.5Multiply.

Example 3 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.

1.A 2.B 3.C 4.D Example 3 A.720 in 2 B.1,250 in 2 C.7,348 in 2 D.12,960 in 2 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?

End of the Lesson

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

1.A 2.B 3.C 4.D Five Minute Check 1 (over Chapter 10) A.147 B.123 C.57 D.33 Find the value of x in the figure.

1.A 2.B 3.C 4.D Five Minute Check 2 (over Chapter 10) A.acute; isosceles B.isosceles; obtuse C.obtuse; isosceles D.acute; scalene Classify the triangle by its angles and by its sides.

1.A 2.B 3.C 4.D Five Minute Check 3 (over Chapter 10) A.x = 28 cm B.x = cm C.x = 7 cm D.x = 1.75 cm Find the values of x in the pair of similar figures.

1.A 2.B 3.C 4.D Five Minute Check 4 (over Chapter 10) 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. 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?

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