To determine the type of triangle based on its angles, we can use the following criteria:
- Acute triangle: All angles are less than 90 degrees.
- Right triangle: One angle is exactly 90 degrees.
- Obtuse triangle: One angle is greater than 90 degrees.
In the case you've provided, the triangle has angles of 117 degrees, 32 degrees, and 31 degrees.
- One of the angles (117 degrees) is greater than 90 degrees, which means it is an obtuse angle.
Therefore, the triangle is classified as an obtuse triangle.