Hello from MrBillDoesMath!
Answer:
col 1: 60
col 2: 60
col 3: 120
col 4: 120
Discussion:
Two lines intersect in two pairs of vertical angles and pairs of vertical angles are equal. Trial and error showed these values shroud do the trick:
col 1: 60
col 2: 60
col 3: 120
col 4: 120
Note the vertical angles: (col 1,col 2) and (col 3, col 4). Also col 1+ col2 + col 3 + col 4 = 360, which is the number of degrees spanned by a line.
Thank you,
MrB
