Sum of Interior Angles of a Triangle
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.
Open-ended question 1
If you move the point to change the original triangle, what happens to angle ?
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Open-ended question 2
What is the sum of all the interior angles of a triangle?
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Open-ended question 3
Do you think it is possible to have a triangle with angles 50°, 60°, and 80°? Explain.
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Prerequisite Resources
More from Angle Sum Properties of Triangles, Quadrilaterals, and Polygons
