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Five-Minute Check (over Lesson 13–9) Main Idea and Vocabulary
Example 1: Find the Perimeter by Adding Side Lengths Key Concept: Perimeter of a Square Example 2: Perimeter of a Square Key Concept: Perimeter of a Rectangle Example 3: Perimeter of a Rectangle Lesson Menu
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I will find perimeters of polygons.
Main Idea/Vocabulary
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Find the Perimeter by Adding Side Lengths
Find the perimeter of the figure below. Estimate = 30 mm Example 1
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Find the Perimeter by Adding Side Lengths
Add the lengths of each side. = 29.5 Answer: The perimeter of the figure is millimeters. This is close to the estimate, so the answer is reasonable. Example 1
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Find the perimeter of the figure below.
35 35.3 40.3 70 A B C D Example 1
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KC 1
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Perimeter of a Square Dyani created a collage for art class using square tiles like the one shown below. What is the perimeter of the tile? 3 Example 2
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Answer: The perimeter of the tile is 12 centimeters.
Perimeter of a Square P = 4s Perimeter of a square P = 4(3) Replace s with 3. P = 12 Multiply. Answer: The perimeter of the tile is 12 centimeters. Example 2
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What is the perimeter of the square below?
C D Example 2
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KC 2
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Perimeter of a Rectangle
Kaleb is building a fence around his rectangular garden. The garden is 8 feet long and 6 feet wide. How many feet of fencing will Kaleb need? Example 3
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Perimeter of a Rectangle
Find the perimeter of the garden. P = w Perimeter of a rectangle P = 2(8) + 2(6) = 8 and w = 6 P = Multiply. P = 28 Add. Answer: So, Kaleb will need 28 feet of fencing. Example 3
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Find the perimeter of the figure.
41 mm 40 mm 39 mm 42 mm A B C D Example 3
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End of the Lesson End Lesson
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Five-Minute Check (over Lesson 13–9) Image Bank Math Tool Chest
Volumes of Prisms Resources
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flipping a figure over a line
(over Lesson 13–9) Determine whether the transformation is a translation, reflection, or rotation. flipping a figure over a line translation reflection rotation none of the above A B C D Five Minute Check 1
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