Unit

#### Description:

Perpendicular Lines in the Coordinate PlaneWhat 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.Lessons, videos, exercises, and text from CK-12. Additional resources available at this site

#### Subjects:

• Mathematics > General
• Mathematics > Geometry

• Grade 9
• Grade 10

#### Keywords:

slope parallel perpendicular lines

English

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Public - Available to anyone

#### License Deed:

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#### Collections:

Teacher Resources
Update Standards?

#### CCSS.Math.Practice.MP1: Common Core State Standards for Mathematics

Make sense of problems and persevere in solving them.

#### CCSS.Math.Practice.MP2: Common Core State Standards for Mathematics

Reason abstractly and quantitatively.

#### CCSS.Math.Practice.MP5: Common Core State Standards for Mathematics

Use appropriate tools strategically.

#### CCSS.Math.Practice.MP6: Common Core State Standards for Mathematics

Attend to precision.

#### CCSS.Math.Content.HSG-GPE.B.5: Common Core State Standards for Mathematics

Prove the slope criteria for parallel and perpendicular lines and use them to solve geometric problems (e.g., find the equation of a line parallel or perpendicular to a given line that passes through a given point).
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