20. If the first three angles of a quadrilateral measures 54°, 86°, and 70° respecti sure of the fourth angle? A. 150° B. 160° C. 170° D 21. What is the sum of the measures of the interior angles of a coin, which is in A. 880° B.980° C. 1,080° D 2. How many sides does the polygon have if the sum of each interior angles is A. 11 B. 12 C. 13 D 3. Which of the following could NOT represent the measure of an exterior angl A. 159 B. 270 C. 450 4. If one of the sides of a 32 - gon is 45 cm, what is the perimeter of the polygo D A. 540 B. 1440 C. 2880 D 5. In Figure 2, compute for C A. 870 B. 889 C. 890 D. 90°how many sides does a polygon have if the sum of each interior angles is 1980 degrees ​