# Holt Geometry 1-5 Using Formulas in Geometry 1-5 Using Formulas in Geometry Holt Geometry Warm Up Warm Up Lesson Presentation Lesson Presentation Lesson

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• Holt Geometry 1-5 Using Formulas in Geometry 1-5 Using Formulas in Geometry Holt Geometry Warm Up Warm Up Lesson Presentation Lesson Presentation Lesson Quiz Lesson Quiz
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• Holt Geometry 1-5 Using Formulas in Geometry Are you ready? Evaluate. Round to the nearest hundredth. 1. 12 2 2. 7.6 2 3. 4. 5. 3 2 () 6. (3) 2
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• Holt Geometry 1-5 Using Formulas in Geometry TSW apply formulas for perimeter, area, and circumference. Objective
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• Holt Geometry 1-5 Using Formulas in Geometry perimeter diameter area radius base circumference height pi Vocabulary
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• Holt Geometry 1-5 Using Formulas in Geometry The perimeter P of a plane figure is the sum of the side lengths of the figure. The area A of a plane figure is the number of non-overlapping square units of a given size that exactly cover the figure.
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• Holt Geometry 1-5 Using Formulas in Geometry
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• Holt Geometry 1-5 Using Formulas in Geometry The base b can be any side of a triangle. The height h is a segment from a vertex that forms a right angle with a line containing the base. The height may be a side of the triangle or in the interior or the exterior of the triangle.
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• Holt Geometry 1-5 Using Formulas in Geometry Perimeter is expressed in linear units, such as inches (in.) or meters (m). Area is expressed in square units, such as square centimeters (cm 2 ). Remember!
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• Holt Geometry 1-5 Using Formulas in Geometry Find the perimeter and area of each figure. Example 1: Finding Perimeter and Area
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• Holt Geometry 1-5 Using Formulas in Geometry Find the perimeter and area of each figure. Example 2: Finding Perimeter and Area
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• Holt Geometry 1-5 Using Formulas in Geometry Example 3 Find the perimeter and area of a square with s = 3.5 in.
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• Holt Geometry 1-5 Using Formulas in Geometry The Queens Quilt block includes 12 blue triangles. The base and height of each triangle are about 4 in. Find the approximate amount of fabric used to make the 12 triangles. Example 4: Crafts Application
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• Holt Geometry 1-5 Using Formulas in Geometry Example 5 Find the amount of fabric used to make four rectangles. Each rectangle has a length of in. and a width of in.
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• Holt Geometry 1-5 Using Formulas in Geometry In a circle a diameter is a segment that passes through the center of the circle and whose endpoints are on a circle. A radius of a circle is a segment whose endpoints are the center of the circle and a point on the circle. The circumference of a circle is the distance around the circle.
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• Holt Geometry 1-5 Using Formulas in Geometry The ratio of a circles circumference to its diameter is the same for all circles. This ratio is represented by the Greek letter (pi). The value of is irrational. Pi is often approximated as 3.14 or.
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• Holt Geometry 1-5 Using Formulas in Geometry Example 6: Finding the Circumference and Area of a Circle Find the circumference and area of a circle with radius 8 cm. Use the key on your calculator. Then round the answer to the nearest tenth.
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• Holt Geometry 1-5 Using Formulas in Geometry Example 7 Find the circumference and area of a circle with radius 14m.
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• Holt Geometry 1-5 Using Formulas in Geometry
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• Holt Geometry 1-5 Using Formulas in Geometry Lesson Quiz: Part I Find the area and perimeter of each figure. 1. 2. 3. 23.04 cm 2 ; 19.2 cm x 2 + 4x; 4x + 8 10x; 4x + 16
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• Holt Geometry 1-5 Using Formulas in Geometry Lesson Quiz: Part II Find the circumference and area of each circle. Leave answers in terms of . 4. radius 2 cm 5. diameter 12 ft 6. The area of a rectangle is 74.82 in 2, and the length is 12.9 in. Find the width. 4 cm; 4 cm 2 36 2 ft; 12 ft 2 5.8 in ##### Holt Geometry 2-2 Conditional Statements 2-2 Conditional Statements Holt Geometry Warm Up Warm Up Lesson Presentation Lesson Presentation Lesson Quiz Lesson
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