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5 degrees
Into minutes, then seconds. A 1 degree angle is 60", 0' or, a 1 degree angle can be expressed as 0", 3600' a .5 degree angle can be expressed as 30", and so on.
Complementary angles sum to give 90 degrees. Therefore the complement to an 85 degree angle is a 5 degree angle.
30 degrees
Each exterior angle is 72 degrees