Module 8.2 Lesson 14 More on the Angles of a Triangle.notebook 1 May 19, 2016 Module 8.2 Lesson 14 More on Angles of a Triangle HW Prepare for tomorrow's Module 8.2 Exam Do Now: Go over the review packet
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Module 8.2 Lesson 14 More on the Angles of a Triangle.notebook
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May 19, 2016
Module 8.2 Lesson 14
More on Angles of a Triangle
HWPrepare for tomorrow's
Module 8.2 Exam
Do Now:Go over the review packet
Module 8.2 Lesson 14 More on the Angles of a Triangle.notebook
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Homework p108 #15-18
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Homework p108 #15-18
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What is an exterior angle in a triangle?
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Let's Explore.........
<4 and <1 are a linear pair so are supplementary<1 + <4 = 180
Interior angles of a triangle = 180<1 + <2 + <3 = 180
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Exterior Angle TheoremA measure of an exterior angle of a triangle is equal to the sum of the measures of the two
non-adjacent interior angles
Interior
Interior Exterior
Interior + Interior =Exterior
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Interior Angle:___________
Exterior Angle: __________
Identify which angle is an interior or an exterior angle.
** How many degrees are in a triangle?
** angle x and y form what kind of angle?
_________________________________
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1000
550
450x
The exterior angle of a triangle is CONGRUENT to the SUM of the two opposite interior angles.
RULE:
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The Appointment Game!
1 o'clock: #6-10
2 o'clock: #11-14
3 o'clock: #15-18
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