Define angles across from each other. An informative segment from a larger playlist on geometry introduces vertical angles and shows they have equal measures. Using their properties, the presenter solves problems involving vertical angles.

Concepts

vertical angles, intersecting lines, angle measurement, linear equations, solving for 1 variable, solving equations

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Additional Tags

math

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Instructional Ideas

• Lead a discussion between the difference of equal and congruent

Classroom Considerations

• Pupils should have an understanding of linear pairs
• Assumes the class can solve linear equations with variables on both sides of the equal sign

• This video is hosted on YouTube

Pros

• Uses colors to help distinguish angles
• Shows the steps in solving equations

Cons

• None

Common Core

7.G.B.5 MP6