How do you find the missing angle in a triangle?

In a triangle, the sum of all three interior angles is always 180 degrees. To find the missing angle in a triangle, you can use the following formula:

[\text{Missing angle} = 180^\circ - \text{Sum of the other two angles}]

For example, if two angles in a triangle are 40° and 60°, you can find the missing angle as:

[\text{Missing angle} = 180^\circ - (40^\circ + 60^\circ) = 180^\circ - 100^\circ = 80^\circ]

This method applies to all triangles, making it a useful tool for solving geometry problems.