In the paper airplane shown , abcd =efgh, m

The answer is d because angle b is a 90 degree angle (because it is as corner of paper); angle c is also 90 (it's given); and angle a is 143 (also given). You add all three up and get 323. Subtract 323 from 360 (because 360 is how many degrees that are in a quadrilateral) and the answer is 37

Here for a good time of free question aha

Add the cents that add the left overs to get the first number