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5 Minute Check

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Find the area. Complete in your notebook. 1. 6in 9in

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5 Minute Check Find the area. Complete in your notebook. 1. 6in 9in 9 in · 6in = 54 in²

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5 Minute Check Find the area. Complete in your notebook. 2. 13.5ft 2.5ft

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5 Minute Check Find the area. Complete in your notebook. 2. 13.5ft 2.5ft 13.5 ft · 2.5 ft = 33.75 ft²

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5 Minute Check Find the area. Complete in your notebook. 3. 1.2cm 4. 9.8cm

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5 Minute Check Find the area. Complete in your notebook. 1.2 cm · 9.8 cm = 11.76 cm² 3. 1.2cm 4. 9.8cm

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5 Minute Check

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Flashcards

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Tuesday, Feb 4 Chapter 9.1 Area of Parallelograms

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Objective: To find the area of parallelograms.

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Area of Parallelograms At the end of this lesson you should be able to answer the following question. How are parallelograms related to rectangles?

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Area of Parallelograms A polygon is a closed figure formed by 3 or more straight lines.

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Area of Parallelograms A polygon is a closed figure formed by 3 or more straight lines. A quadrilateral is a polygon with 4 sides.

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Area of Parallelograms A parallelogram is a quadrilateral with opposite sides parallel and equal in length.

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Area of Parallelograms A rhombus is a parallelogram with all equal sides.

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Area of Parallelograms The area A of a parallelogram is the base b multiplied by the height h. A = bh The base and height must be perpendicular to each other. Connected by a 90˚ angle. h b

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Area of Parallelograms A formula is an equation that shows a relationship among certain quantities. The formula to find the area of a parallelogram is A = bh

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Area of Parallelograms What is the area of the parallelogram?

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Area of Parallelograms What is the area of the parallelogram? A =bh b = ?

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Area of Parallelograms What is the area of the parallelogram? A =bh b = 6 h = ?

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Area of Parallelograms What is the area of the parallelogram? A =bh b = 6 h = 8 What is the area?

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Area of Parallelograms What is the area of the parallelogram? A =bh b = 6 h = 8 What is the area? A = 6 · 8 = 48 units² or 48u²

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Area of Parallelograms What is the area of the parallelogram? Do this on your own.

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Area of Parallelograms What is the area of the parallelogram? b = 20cm h = 11cm A = 11cm · 20cm = 220cm²

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Area of Parallelograms What is the area of the parallelogram? Do this on your own.

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Area of Parallelograms What is the area of the parallelogram? b = 4m h = 16m A = 4m · 16m = 64m²

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Area of Parallelograms What is the area of the parallelogram? Do this on your own.

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Area of Parallelograms What is the area of the parallelogram? b = 2.6m h = 5.1m A = 2.6m · 5.1m = 13.26m²

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Area of Parallelograms What is the area of the parallelogram? Do this on your own.

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Area of Parallelograms What is the area of the parallelogram? b = 9 ft h = 18 ft A = 166.5ft²

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Area of Parallelograms Romilla is painting a replica of the national flag of Trinidad and Tobago for a research project. Find the area of the black stripe. Do this on your own.

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Area of Parallelograms

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Find the area of the shaded region. Do this on your own.

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Area of Parallelograms Find the area of the shaded region. Area of the rectangle 25 · 11 = 275ft² Area of the parallelogram 4 · 12 = 48ft² The area of the shaded region is the area of the rectangle minus the area of the parallelogram, 275ft² - 48ft² = 227ft²

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Area of Parallelograms Find the area of the shaded region. Do this on your own.

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Area of Parallelograms Find the area of the shaded region. 15 · 8 – 6 · 6 = 84cm²

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Area of Parallelograms How are parallelograms related to rectangles?

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Area of Parallelograms Agenda Notes Homework– Homework Practice 9-1 Due Wednesday, Feb 5 Mid-Chapter 9 Quiz –Friday, Feb 7

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