Outline the necessary transformations to prove cbf=edf

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

What is not true about kl and mn? what is mn? (show your work)

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?