Arc with endpoints that are the endpoints of a diameter is called a semicircle and has a measure of 180 degrees. Adjacent arcs are two arcs on the same circle which d<span>o not overlap and s<span>hare a common end point. Hope this answers the question.</span></span>
Answer:
180-x
Step-by-step explanation:
its 180 degrees because the lines are parallel
18 and -2! 18(-2)= -36 and 18-2=16
It would be irrational, there is a math calculator called math papa if you need to check your answer