Sum of Interior Angles of a Triangle
Discover the sum of the angle measures in any triangle in this activity.
Task 1
Putting It All Together
Answer these open ended questions on your own or with others to form deeper math connections.
Task 2
If you move the point to change the original triangle, what happens to angle ?
Task 3
What is the sum of all the interior angles of a triangle?
Task 4
Do you think it is possible to have a triangle with angles 50°, 60°, and 80°? Explain.