Final answer:
In a triangle, the sum of all three angles is always equal to 180°. Given that two angles add up to 110°, we can find the measure of the third angle by subtracting the sum of the two known angles from 180°.
Step-by-step explanation:
In a triangle, the sum of all three angles is always equal to 180°.
Let's say the measure of the third angle is x°.
Given that two angles add up to 110°, we can write the equation: x + 110° = 180°
Solving for x gives us x = 70°.
Therefore, the measure of the third angle is 70°.
Learn more about Triangle angles