Perimeter.

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Honors Geometry Section 5.1 Perimeter and Area

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Presentation transcript:

Perimeter

Warm Up How many sides do each of these shapes have? Do squares and rectangles have equal sides?

Today we will find the perimeter of polygons by using measures of length. Perimeter: The distance around a figure 10 cm 6 cm 6 cm 10 cm 10 + 6 + 10 + 6 = ______________ 32 cm

Let’s find the perimeter The distance around a figure 7 cm 5 cm 5 cm 7 + 5 + 7 + 5 Perimeter = 24 cm 7 cm 4 cm 4 + 2 + 4 + 2 Perimeter = 12 cm 2 cm 2 cm 4 cm 4 cm 4 cm 4 cm 4 + 4 + 4 + 4 Perimeter = 16 cm 4 cm

What is the perimeter of the shapes below? 5 cm 2 cm 2 cm 4 m 5 cm 4 m 5 + 2 + 5 + 2 = _______ 14 cm 4 m 4 + 4 + 4 + 4 = ___ 16 m

What is the perimeter of the shapes below? 5 cm 5 m 5 m 4 cm 4 cm 5 m 5 cm 5 + 4 + 5 + 4 = _______ 18 cm 5 m 5 + 5 + 5 + 5 = _____ 20 m

What is the perimeter of this figure?

Do these figures have the same perimeter?

5 + 4 + 10 + 5 + 15 + 9 = _____

4 cm 8 cm 11 cm 6 cm 3 cm _________ units

Find the missing side for each figure Find the missing side for each figure. Then determine whether the perimeter is correct.