To find the measure of angle B using the Triangle Angle Sum Theorem, we need to know the measures of the other two angles in the triangle. The theorem states that the sum of the angles in a triangle is 180°.
Let's denote the measures of the angles in the triangle as follows:
- Angle A
- Angle B
- Angle C
According to the theorem: \[ \text{Angle A} + \text{Angle B} + \text{Angle C} = 180° \]
Once we know the values of angle A and angle C, we can rearrange the equation to solve for angle B:
\[ \text{Angle B} = 180° - (\text{Angle A} + \text{Angle C}) \]
If you have specific measurements for angle A and angle C, please provide them, and I can calculate angle B for you.
From the response options you've given (25°, 335°, 80°, and 45°), I cannot determine angle B without the measures of the other two angles. If you provide those, I can help you find the value of angle B.