Polygon theorems Quiz Welcome to your Polygon theorems Quiz Answer the question What is the sum of all interior angles in a quadrilateral? 180 360 Depends on the type of a quadrilateral Answer the question Do diagonals of a rhombus bisect each other perpendicularly? Yes No True or False? A polygon must be a closed figure. True False Answer the question What is the sum of all the exterior angles of the octagon? 180 360 I would need to use a special formula True or False? The sum of interior angles of any polygon can be determined using the formula S = (n - 2) × 180 True False Time's upTime is Up!