IXL math problem please help

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?

Charlie tosses five coins.what is the probability that all five coins will land tails up.