Describe the rays of an angle that measures 1/2 turn

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

One side of a rectangle is 7 centimeters shorter than six times the other side. find the length of the longer side if we also know that the perimeter of the rectangle is 266 centimeters.