90 x 2 = 180
180 X 2 = 360
3*3*2*2*5
If you mean 90 times 2 then it equals 180 if you know your angles, you know to 180 degrees is —- just a line. And if you count by 90, it goes like this; 90,180.
4x45 = 180
It is 30 times 6 equals 180
180/20=99*20=180
7.2 x 25 = 180
4 x 45 = 180
5 x 36 = 180
180/40 which is 4.5
10 x 18 = 180
30