Without using a protractor, but with the aid of your two new conjectures, find the measure of each lettered angle in Exercises 1-5. Copy the diagrams
so that you can write on them. List your answers in alphabetical order.

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?