It looks like the worksheet you uploaded is focused on finding missing angles in triangles based on the interior angle sum property. This property states that the sum of the interior angles of any triangle is always 180°. I will guide you through the solution of each problem on the sheet.

Let me summarize the problems and their solutions:

1. First triangle:

   • Given angles: $90^\circ$ and $26.3^\circ$
   • The sum of angles in a triangle is $180^\circ$, so the missing angle $\alpha$ can be found by: $\alpha = 180^\circ - 90^\circ - 26.3^\circ = 63.7^\circ$
   • $\alpha = 63.7^\circ$

2. Second triangle:

   • Given angles: $61.8^\circ$ and $75.2^\circ$
   • The missing angle $k$ is: $k = 180^\circ - 61.8^\circ - 75.2^\circ = 43^\circ$
   • $k = 43^\circ$

3. Third triangle:

   • Given angles: $80.5^\circ$ and $80.5^\circ$ (Isosceles triangle)
   • The missing angle $v$ is: $v = 180^\circ - 80.5^\circ - 80.5^\circ = 19^\circ$
   • $v = 19^\circ$

4. Fourth triangle:

   • Given angles: $58^\circ$ and $33.7^\circ$
   • The missing angle $e$ is: $e = 180^\circ - 58^\circ - 33.7^\circ = 88.3^\circ$
   • $e = 88.3^\circ$

5. Fifth triangle:

   • Given angles: $42.4^\circ$ and $14^\circ$
   • The missing angle $y$ is: $y = 180^\circ - 42.4^\circ - 14^\circ = 123.6^\circ$
   • $y = 123.6^\circ$

6. Sixth triangle:

   • Given angles: $32.6^\circ$ and $61.7^\circ$
   • The missing angle $f$ is: $f = 180^\circ - 32.6^\circ - 61.7^\circ = 85.7^\circ$
   • $f = 85.7^\circ$

Would you like any more details or clarifications?

Here are 5 related questions you can try:

1. What is the sum of the angles in a quadrilateral?
2. If one angle of a right triangle is $50^\circ$, what is the other angle?
3. How can we find the exterior angle of a triangle?
4. What is the sum of the interior angles of a pentagon?
5. Can a triangle have more than one obtuse angle?

Tip: Always verify the type of triangle (e.g., right, isosceles, equilateral) to ensure your angle calculations make sense based on its properties.