To find the measure of the third angle in a triangle when the other two angles are known, we can use the fact that the sum of all angles in a triangle is always 180 degrees.
Given the two angles:
- Angle 1 = 35 degrees
- Angle 2 = 45 degrees
We first add the two known angles together:
35 + 45 = 80 degrees
Next, to find the measure of the third angle, we subtract the sum of the first two angles from 180 degrees:
180 – 80 = 100 degrees
Therefore, the measure of the third angle is 100 degrees.