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Area in the amount of space inside an enclosed region. Area of Rectangle = base x height Base =10 Height = 6 Area = (10)(6) = 60 square units

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A parallelogram has the same area of a rectangle because if you cut off part of a parallelogram and move it to the other side it looks like a rectangle. Area for a Parallelogram = Base x Height

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5 5 8 8 4 The Base and Height of a figure always made a right angle. Area of the parallelogram = base x height = 8 x 4 = 32 square units

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6 6 8 7 8 Remember the Base and Height of a figure always made a right angle. Area Parallelogram = base x height = 6 x 7 = 42 square units

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The Area of a triangle = ½ x (Base x Height) or 1/2bh WHY? Answer: Because every triangle is actually ½ of a parallelogram or a rectangle.

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The height of this triangle is 5. Area = ½ b h = ½ (8) (5) = 20 square units 10 65 83.4

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Step 1: Graph y = x+2, y=2, x=6 Step 2: Count the length of the base and height Step 3: Calculate the area of the triangle Area = ½ bh = ½ (6)(6) = 18 square units 6 6

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Step 1: Plot the points Step 2: Connect the dots Step 3: Count out the base and height Step 4: Find the Area Area = b h = (7)(4) = 28 square units E FG H 4 7

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Regular Geometry: Pg 351 (1-7 all, 11-13 all, 25,27, 36-42 even) Honors Geometry - 3 more slides Pg 351 (2-24 even, 25,27, 36-42 even, 44,45)

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The trick to this problem is that there are two ways to find the area of this parallelogram: A = (10)(x) = (8)(6) 10x = 48 x = 4.8 10 6 x 8

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A triangle has a height of 12 cm and an area of 48 cm 2 Find the length of the base. Area of Triangle = ½ b h 48 = ½ b (12) 48 = 6b 8 = base

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A parallelogram has an area of 270 square cm. The base and height have a ratio of 5:6 respectively. Find the base and the height. Area = b h 270 = (5x)(6x) 270 = 30x 2 9 = x 2 3 = x base = 5(3) = 15 and height = 6(3) = 18 6x 5x

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