Can someone answer these questions and provide work?

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.