Find the values of a and b. The diagram is not to scale.
a = 180 - 36
b = 180 - 113
we sum the two given angles, to get 36+113=149
we see that choice 3 and 4 don't work, because they don't sum to 200, and choice 2 doesnt work because the last digit will be 0, so choice 1 is our answer