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Big Ideas Math: Modeling Real Life, Grade 8
BI
Big Ideas Math: Modeling Real Life, Grade 8 View details
1. Parallel Lines and Transversals
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Exercise 1 Page 104

Use the relationship of angles between parallel lines.

Angle Measure: 63^(∘)
Explanation: See solution.

Practice makes perfect

Let's consider the given diagram.

angles

To find the measure of ∠ 1, we will use the fact that corresponding angles of parallel lines are congruent. Since ∠ 1 and the 63^(∘) angle are corresponding angles and lines l and m are parallel, these angles are congruent.

angles

Congruent angles have the same measure, so the measure of ∠ 1 is 63^(∘).

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Try It 2 (Page 104)
Try It 3 (Page 105)
Try It 4 (Page 106)
Try It 5 (Page 106)
Try It 6 (Page 106)
arrow_right Self-Assessment for Concepts & Skills p.106
Self-Assessment for Concepts & Skills 7 (Page 106)
Self-Assessment for Concepts & Skills 8 (Page 106)
Self-Assessment for Concepts & Skills 9 (Page 106)
arrow_right Self-Assessment for Problem Solving p.107
Self-Assessment for Problem Solving 10 (Page 107)
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arrow_right Review & Refresh p.108
Review & Refresh 1 (Page 108)
Review & Refresh 2 (Page 108)
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Review & Refresh 5 (Page 108)
arrow_right Concepts, Skills, & Problem Solving p.108-110
Concepts, Skills, & Problem Solving 6 (Page 108)
Concepts, Skills, & Problem Solving 7 (Page 108)
Concepts, Skills, & Problem Solving 8 (Page 108)
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