What is the value of s?

The answer to your question is 33°

Step-by-step explanation:

Data

∠1 = 39°

∠2 = 108°

∠3 = ?

Process

To solve this problem, remember that the sum of the internal angles in a triangle equals 180°.

Then,

              ∠1 + ∠2 + ∠3 = 180°

-Substitution

             39° + 108° + ∠3 = 180°

-Solve for ∠3

              ∠3 = 180 - 39 - 108

-Simplification

              ∠3 = 180° - 147°

-Result

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be copied. adjust the compasses' width to the point q. the compasses' width is now equal to the length of the line segment pq.

step-by-step explanation: