Question

Where can I find angles measurements that is Missing each set of supplemenry angles?

Answer 1

Remember that

If the sum of two angles is equal to 180 degrees, then the angles are supplementary

so

In this problem

Let

x ----> the missing angle

x+34.6 =180 degrees -----> by form a linear pair (supplementary angles)

solve for x

x=180-34.6

x=145.4 degrees