What is a Radian?

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Exploration

GR. 9-12

Skill:

Determine the measure of an angle in degree mode or in radian mode.

What is a Radian?

Explore how the definition of a radian is visualized and find its relationship to the radius of a circle.

Putting It All Together

Answer these open ended questions on your own or with others to form deeper math connections.

Open-ended question

In your own words, describe an angle that has a measure of 1 radian.

Text and math input