Measuring Angles. Please help me this is due at 11:59 today

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2