Relating Central and Inscribed Angle

Relating Central and Inscribed Angle

Explore how an inscribed angle compares to the central angle that intercepts the same arc.


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Putting It All Together

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

Open-ended question 1

If you move the vertex of the inscribed angle along the circle without changing the endpoints of the arc, does the angle measure change?

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Open-ended question 2

What relationship do you observe in the app above between a central angle and an inscribed angle that intercept the same arc?

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Open-ended question 3

If the arc is a semicircle, what are the measures of the central and inscribed angles, respectively?

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Open-ended question 4

Explore the provided proof without words. What properties of triangles are implied in each step?

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