For puzzle 3, the first one is 180 - (60 + 55), which equals 65, and so that is angle 1, and because a line is 180 degrees, and since they are proportional, the other side is identical. var 2 = 55, var 3 = 65, and var 4 = 60.
Puzzle number 4 is
var 1 = 58, it is proportional, 2 = 180-58=122,
var 3 = 180-45, because that is proportional with 2, number 4 is 180-58, which equals 122,
number 5 is 45, number 6 is 90, because that is a right angle, number 7 is also 90, number 8 is also 90, and number 9 is 122, because 180 - 58 = 122.
Hope this helps and have a nice day:)