The image shows a worksheet focused on the "Interior Angles of Triangles." It includes several diagrams of triangles with angles labeled and columns for calculations or explanations. To provide assistance, I can analyze the typical problems that may be on this worksheet and explain how to solve for the interior angles of triangles.

The fundamental property to remember is that the sum of the interior angles of any triangle is always $180^\circ$. Based on the worksheet, you likely need to use this property to find missing angles when given some angles or descriptions.

Would you like me to:

1. Explain how to find a missing angle when given two angles of a triangle?
2. Solve one of the problems from the worksheet for you?
3. Describe types of triangles based on their angles?
4. Discuss common mistakes when solving for triangle angles?
5. Explain why the sum of the angles in a triangle is $180^\circ$?

Tip: When solving for a missing angle in a triangle, always remember the formula $A + B + C = 180^\circ$, where $A$, $B$, and $C$ are the interior angles.