13) b=145 because a line equals 180° so you subtract 35° from 180° 14) b=61 because it as right angle so 90 minus 29 equals 61 15) b= 23 because 360 is a full circle so you add 243 and 94 and get 337 then subtract 337 from 360 16)b=131 because you subtract 49 from 180 17) b=90 because you subtract 90 from 180 18) b=73 because of vertical angles
