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Warm Up Determine the measure of the missing interior angle. What type of triangle is it? Unit 8 - Lesson 2 Exterior Angles of a Triangle

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Warm Up Determine the measure of the missing interior angle. What type of triangle is it? Unit 8 - Lesson 2 Exterior Angles of a Triangle

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Exterior Angles If we extend the sides of a triangle, we can create 3 exterior angles. Unit 8 - Lesson 2 Exterior Angles of a Triangle **

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Exterior Angles There is a relationship between the exterior angles and the interior angles: Unit 8 - Lesson 2 Exterior Angles of a Triangle ** Each exterior angle is equal to the sum of the two opposite interior angles.

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Determine the measure of the unknown angle: Unit 8 - Lesson 2 Exterior Angles of a Triangle

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Determine the measure of the unknown angles: Unit 8 - Lesson 2 Exterior Angles of a Triangle

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Determine the measure of the unknown angles: Unit 8 - Lesson 2 Exterior Angles of a Triangle

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The Sum of the Exterior Angles If we add up the measure of all 3 Exterior Angles, what will be the total? Unit 8 - Lesson 2 Exterior Angles of a Triangle

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The Sum of the Exterior Angles Unit 8 - Lesson 2 Exterior Angles of a Triangle The sum of the Exterior Angles of a Triangle is always 360 0 ! ∠ A + ∠ B + ∠ C = 360 0

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Determine the measure of the unknown angle: Unit 8 - Lesson 2 Exterior Angles of a Triangle

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Homework Page 83 #2, 3, 5, 6, 7 Unit 8 - Lesson 2 Exterior Angles of a Triangle Learning Goals: I can determine the value of an exterior angle on a triangle if given the two opposite interior angles. I can determine the value of an exterior angle on a triangle if given the other two exterior angles. I know that the exterior angles of a triangle add up to 360 0.

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