Big Ideas Math Integrated I, 2016
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Big Ideas Math Integrated I, 2016 View details
1. Pairs of Lines and Angles
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Exercise 8 Page 501

Perpendicular lines create a 90^(∘) angle between them.

NP and PQ

Practice makes perfect
Perpendicular lines create a 90^(∘) angle between them. This kind of angle, which is a right angle, is commonly marked with a square. In our figure, we can see one of these angles.

Therefore, NP and PQ are perpendicular.