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<p>Perpendicular Lines in the Coordinate Plane</p><p>What if you wanted to figure out if two lines in a shape met at right angles? How could you do this? After completing this Concept, you'll be able to use slope to help you determine whether or not lines are perpendicular.</p><p>Lessons, videos, exercises, and text from CK-12. <br/>Additional resources available at this site</p>
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