The Triangle Angle Sum Theorem states that the sum of the angles inside a triangle must equal 180°. Using this theorem, find the measure of angle B.

(1 point)
Responses

25°
25°

335°
335°

80°
80°

45°
45°
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To find the measure of angle B, we first know that the sum of the angles inside a triangle is 180°. Looking at the given options, we can eliminate 25°, 335°, and 45° as they are not equivalent to 180°.
Therefore, the correct answer is 80°. This is because the sum of angle A (40°) and angle C (60°) equals 100°, leaving 80° for angle B to make the total sum of all angles in the triangle equal to 180°.