1. **State the problem:** We have a triangle with angles measuring 37°, 3°, and 140°. We need to determine the type of triangle based on its angles. 2. **Recall the triangle angle sum rule:** The sum of the interior angles of any triangle is always 180°. 3. **Check the sum:** Calculate $37 + 3 + 140 = 180$ degrees, so these angles do form a triangle. 4. **Classify the triangle by angles:** - An **acute triangle** has all angles less than 90°. - A **right triangle** has one angle exactly 90°. - An **obtuse triangle** has one angle greater than 90°. 5. **Analyze the given angles:** The angle 140° is greater than 90°, so the triangle is **obtuse**. **Final answer:** The triangle is an **obtuse triangle**.