SOLUTION: A decagon has angle that measures 170°,120°,160°,135°,160°,130°,160°,120°,135°,and s. What is s?

Algebra ->  Polygons -> SOLUTION: A decagon has angle that measures 170°,120°,160°,135°,160°,130°,160°,120°,135°,and s. What is s?      Log On


   

Question 1071653: A decagon has angle that measures 170°,120°,160°,135°,160°,130°,160°,120°,135°,and s. What is s?
Answer by Edwin McCravy(20065) About Me  (Show Source):
You can put this solution on YOUR website!
1. Calculate (n-2)×180° substituting n=10.

2. Add the 9 known angles.

3. Subtract what you got for step 2 from what you got for step 1.

Edwin