'Find angle measures' presentation slideshows

In this chapter students will:

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9-6

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Warm up

Warm up. Find x . Round to the nearest tenth. A. 14.1 B. 17.4 C. 19.4 D. 21.3. Warm up. Find x . Round to the nearest tenth. A. 9.5 B. 15.9 C. 23.7 D. 30.8. Unit 6 Lesson 3. I can use trigonometric ratios to find angle measures in right triangles .

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4-2

4-2. Classifying Triangles. Holt Geometry. Holt McDougal Geometry. Warm Up Classify each angle as acute, obtuse, or right. 1. 2. 3. 4. If the perimeter is 47, find x and the lengths of the three sides. right. acute. obtuse. x = 5; 8; 16; 23. Learning Targets.

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8-3

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Warm Up for Section 1.3 (1). In a 30 o -60 o -90 o triangle, the hypotenuse

Warm Up for Section 1.3 (1). In a 30 o -60 o -90 o triangle, the hypotenuse measures 8 inches. What is the length of the short leg? (2). In a 45 o -45 o -90 o triangle, the hypotenuse measures 12 inches. What is the length of one leg?

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8-3

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1.4 Lesson

1.4 Lesson. Measure and Classify Angles. Angle, Vertex, and Sides. an angle consists of two rays that share the same endpoint. The point where the rays intersect is called the vertex of the angle. The two rays are called the sides of the angle. Name the three angles in diagram.

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I will be able to classify triangles by their angle measures and side lengths.

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Warm Up Classify each angle as acute, obtuse, or right. 1. 2. 3.

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Angle Pair Relationships

Angle Pair Relationships. Section 1.5. Vocabulary. An angle consists of two different rays with the same endpoint . The rays are the sides of the angle. The endpoint is the vertex of the angle. Vocabulary. An angle is named with three points, just the vertex , or a number .

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Geometry Notes

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EXAMPLE 1

Name the three angles in the diagram. WXY, or YXW. YXZ, or ZXY. WXZ, or ZXW. You should not name any of these angles X because all three angles have X as their vertex. EXAMPLE 1. Name angles.

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Splash Screen

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1.5 Exploring Angle Pairs 9/20/10

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Homework Answers

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EXAMPLE 1

Name the three angles in the diagram. WXY, or YXW. YXZ, or ZXY. WXZ, or ZXW. You should not name any of these angles X because all three angles have X as their vertex. EXAMPLE 1. Name angles.

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EXAMPLE 1

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EXAMPLE 3

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EXAMPLE 1

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