It appears that the file you uploaded contains a worksheet focused on solving for unknown values related to triangles, such as using the Triangle Sum Theorem and the Exterior Angle Theorem. The document includes a series of problems with unknown angles denoted by "x" and various known angles.

Would you like help solving any of these specific problems from the worksheet? Feel free to provide the number(s) of the problems you'd like assistance with, and I can guide you through the solution!