Answer:
The measure of the third angle must be 104°
Step-by-step explanation:
Interior Angles of a Triangle
In any given triangle, the sum of its interior angles is 180°.
We are given the angles x=51° and y=25°. To find the third angle, z, we set up the equation:
x + y + z = 180
Solving for z:
z = 180 - x - y
Substituting:
z = 180 - 51 - 25
z = 104°
The measure of the third angle must be 104°
