You're such a great resource, said the complementary angle. A short video in the Socratica Geometry playlist describes complementary, supplementary, and vertical angles. It also shows how to calculate the other angle in a supplementary or complementary pair given one of the angles.

Concepts

angles, complementary angles, supplementary angles, vertical angles

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Additional Tags

math

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Instructional Ideas

• Provide some additional examples for individuals to attempt

Classroom Considerations

• Pupils should be familiar with angles
• Learners need to be able to solve one-step algebraic equations

• This video is hosted on YouTube

Pros

• Explanations are clear and concise
  

Cons

• Uses some incorrect notation