Sum of Interior Angles of a Triangle

Discover the sum of the angle measures in any triangle in this activity.
Putting It All Together
Answer these open ended questions on your own or with others to form deeper math connections.
If you move the point to change the original triangle, what happens to angle ?
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What is the sum of all the interior angles of a triangle?
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Do you think it is possible to have a triangle with angles 50°, 60°, and 80°? Explain.
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– GeoGebra Content Team

Information: Sum of Interior Angles of a Triangle