Question

How do you solve that

Answer 1

Well, one line is equal to 180
 Starting with the bottom half, there is a right angle so 180-90 is 90
then take the degree that is given to you(47) and subtract it 90-47 is 43 
so angle 4 is 43 °  
given that,andgle 3 is 90°  because its equal to the right triangle on the bottom 
2 is equal to 4(43° )
which leaves 1 to be 47° 

Hope this helps