The degree measures of the interior angles of a concave hexagon from an arithmetic sequence. the smallest angle measures 35 degrees. how many degrees are there in the measure of the largest angle?
Sum of all the internal angles = 720°
Hence: 35 + (35+a) + (35+2a) + (35+3a) + (35+4a) (35+5a) = 720
Solve for a, then calculate 35+5a.
