The measure of the missing angle of a triangle, with the other two angles measuring 39 and 41 degrees, is 100 degrees. This is calculated by subtracting the sum of the known angles from the total 180 degrees that make up a triangle.
The measure of the missing angle in a triangle can be found using the fact that the sum of all angles in a triangle is 180 degrees. Given two angles of 39 degrees and 41 degrees, we can subtract their sum from 180 to find the third angle. Therefore, the calculation would be 180 - (39 + 41) = 180 - 80 = 100 degrees.
In conclusion, the measure of the missing angle of the triangle is 100 degrees. This process involves simple arithmetic subtraction and the basic property of triangles where the sum of their angles equates to 180 degrees.