Chapter 11.1, Problem 13MC

Let each member of your group use a protractor to make a triangle out of cardboard that has one angle measuring ${30}^0$ and another ${50}^0$. Answer the following and compare your solutions with other members of your group.

a. Show how to use the triangle (without a protractor) to draw an angle with measure ${40}^0$.

b. Is there more than one way to draw an angle of ${40}^0$ using the triangle? Explain.

c. What other angles can be drawn with the triangle? Why?