Answer:
64 i think
Simple explanation:
find the missing angle of the triangle with two given angles:
add 36 and 84 to get 120
subtract 120 from 180 and you will get 60
subtract 60 from 90 to find one of the angles in the other triangle
so now you have that the other triangle has an angle of 86 and another angle of 30
add 86 and 30 to get 116
subtract 116 from 180 to get the "? angle"
you should get 64
Another possible explanation:
extend the line that contains the degrees 36 and 84
this will make a third, smaller triangle
this triangle has two measure that are easy to find and that is 96 and 54
when you add those together, you get 150
subtract 150 from 180 to get 30
30 degrees is the measure of the smaller angle at the 90 degrees symbol
now add 30 and 86 together to get 116
subtract that from 180 to get 64