Big Ideas Math: Modeling Real Life, Grade 8
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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^(∘).