To find the missing angle in a triangle where two angles are given, you can use the fact that the sum of the angles in a triangle is always 180 degrees.

Given angles:

• Angle 1 = 38°
• Angle 2 = 25°

Let's find the missing angle (Angle 3):

$\text{Angle 3} = 180^\circ - (\text{Angle 1} + \text{Angle 2})$ $\text{Angle 3} = 180^\circ - (38^\circ + 25^\circ)$ $\text{Angle 3} = 180^\circ - 63^\circ$ $\text{Angle 3} = 117^\circ$

So, the missing angle is 117 degrees.

Would you like more details, or do you have any questions?

Here are 5 related questions you might find interesting:

1. How do you calculate the missing angle in a quadrilateral?
2. What is the sum of the interior angles of a pentagon?
3. How do you determine if a triangle is acute, obtuse, or right-angled based on its angles?
4. Can you solve for the missing angles in an isosceles triangle if one angle is given?
5. How does the exterior angle theorem help in finding missing angles in a triangle?

Tip: Remember, the sum of the angles in any triangle always equals 180 degrees. This is a fundamental property used in various geometric proofs and calculations.