Me with these angles and measure things. find the missing angles

6. since sum of angels in a triangle = 180
therefore 180 - (30 + 20) = 130
therefore angle ? = 130°, due to being a vertically opposite angle.

7. since straight angles have a sum of 180
therefore 180 - 137 = 43
since sum of triangle angles = 180
therefore 180 - (43 + 102) = 35
again since straight angles have a sum of 180
therefore exterior angle ? = 180 - 35 = 145°

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?