1. which formula can be used to find the sum of the interior angles of a polygon? a. (n-2)180 b.180n - 1 c. 360/n d.(180n - 360)/n 2. is the following statement always, sometimes or never true? "a rhombus is a parallelogram." always sometimes never 3. a hexagon has three right angles. the remaining three angles are congruent. what are their measures? 135° 150° 120° 90° 4. the sum of the interior angles of a polygon is 1440°. how many sides does the polygon have? 14 8 10 12 5. the sum of the measures of four exterior angles of a pentagon is 282 degrees. what is the measure of the fifth exterior angle? 72° 108° 18° 78° 6. how many sides does a regular polygon have if each exterior angle measures 40°? 9 10 8 6 this is the unit 10 lesson 3 alternate quiz, if anyone has the rest of the answers for the test i'd greatly appreciate it!