Ask Question
6 September, 20:20

The sizes of seven exterior angles of an octagon are: 42, 110, 13, 67, 55, 11 and 53. What is the size of the eighth exterior angle?

+1
Answers (2)
  1. 6 September, 20:51
    0
    9 degrees.

    Step-by-step explanation:

    For ALL polygons, the exterior angles add up to 360 degrees.

    Therefore the 8th exterior angle = 360 - (42+110+13+67+55+11+53)

    = 360 - 351

    = 9 degrees.
  2. 7 September, 00:05
    0


    Step-by-step explanation:

    Always some of exterior angle of any polygon is 360

    42 + 110 + 13 + 67 + 55 + 11 + 53 + x = 360

    351 + x = 360

    x = 360 - 351

    x = 9
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “The sizes of seven exterior angles of an octagon are: 42, 110, 13, 67, 55, 11 and 53. What is the size of the eighth exterior angle? ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers