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Over Chapter 10 5-Minute Check 1 A.9 B.36 C.50 D.54 WXYZ is a rectangle. If ZX = 6x – 4 and WY = 4x + 14, find ZX. Over 6.4
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Over Chapter 10 5-Minute Check 2 A.2 B.3 C.4 D.5 WXYZ is a rectangle. If WY = 26 and WR = 3y + 4, find y. Over 6.4
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Over Chapter 10 5-Minute Check 3 A.± 6 B.± 4 C.± 3 D.± 2 WXYZ is a rectangle. If m WXY = 6a 2 – 6, find a. Over 6.4
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Over Chapter 10 5-Minute Check 4 A.38 B.42 C.52 D.54 RSTU is a rectangle. Find m VRS. Over 6.4
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Over Chapter 10 5-Minute Check 5 A.142 B.104 C.76 D.52 RSTU is a rectangle. Find m RVU. Over 6.4
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Over Chapter 10 5-Minute Check 6 A.3 units B.6 units C.7 units D.10 units Given ABCD is a rectangle, what is the length of BC? ___ Over 6.4
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CCSS Content Standards G.GPE.7 Use coordinates to compute perimeters of polygons and areas of triangles and rectangles, e.g., using the distance formula. Mathematical Practices 1 Make sense of problems and persevere in solving them. 7 Look for and make use of structure.
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Then/Now You found areas of rectangles and squares. Find perimeters and areas of parallelograms. Find perimeters and areas of triangles.
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Vocabulary parallelogram: - base: any side can be called the base - height: the perpendicular distance between the two parallel bases
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Vocabulary triangle: - base: any side can be called the base - height: the length of an altitude drawn to a given base
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Vocabulary Formula:Area of a Rectangle b h
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Vocabulary Formula:Area of a Parallelogram
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Vocabulary Formula:Area of a Triangle
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Vocabulary Postulate 11.1: Area Addition Postulate The area of a region is the sum of the areas of its nonoverlapping parts. 1 2
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Vocabulary Postulate 11.2: Area Congruence Postulate If two figures are congruent, then they have the same area.
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Example 1 Perimeter and Area of a Parallelogram Find the perimeter and area of
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Example 1 A. Find the perimeter and area of Perimeter and Area of a Parallelogram
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Example 3 Perimeter and Area of a Triangle SANDBOX You need to buy enough boards to make the frame of the triangular sandbox shown and enough sand to fill it. If one board is 3 feet long and one bag of sand fills 9 square feet of the sandbox, how many boards and bags do you need to buy?
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Example 4 Use Area to Find Missing Measures ALGEBRA The height of a triangle is 7 inches more than its base. The area of the triangle is 60 square inches. Find the base and height.
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Example 4 ALGEBRA The height of a triangle is 12 inches more than its base. The area of the triangle is 560 square inches. Find the base and the height. Use Area to Find Missing Measures
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End of the Lesson
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