3-3 parallel Lines and the triangle sum theorem

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3-3 parallel Lines and the triangle sum theorem

Finding Angle Measures in Triangles What kind of triangle is this? ACUTE What happens when you move all three angles together? 180o 2 3 1 3 2

Finding Angle Measures in Triangles What kind of triangle is this? RIGHT What happens when you move all three angles together? 180o 3 2 1 3 2

Finding Angle Measures in Triangles What kind of triangle is this? Obtuse What happens when you move all three angles together? 180o 2 3 1 2 3

Be sure to ask if you miss one and don’t know why! 3-5 Quiz Use the following questions to assess yourself and see how well you understand today’s lesson. Be sure to ask if you miss one and don’t know why! Remember to record your score on your portfolio sheet.

1. Find the value of k. The diagram is not to scale. 17 73 118 107 Non-Response Grid

2. Find the value of x. The diagram is not to scale. 33 162 147 75 Non-Response Grid

3. A triangular playground has angles with measures in the ratio 8 : 6 : 4. What is the measure of the smallest angle? 30 40 5 20 Non-Response Grid

4. The folding chair has different settings that change the angles formed by its parts. Suppose m2 is 26 and m3 is 70. Find m1 . The diagram is not to scale. 96 106 116 86 Non-Response Grid

5. Find the value of the variable. The diagram is not to scale. 66 19 29 43 Non-Response Grid

Assignment 3-5 p.175-177 #10-34 even You will need your compass tomorrow!!