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.
A
B
100°
55°
Item 1
Item 2
liema
Item 4
Item 5
Item 6
Item 7
Item 8
N T
(1 point)
O 25°
O 335°
O 80°
O 45°
To find the measure of angle B, we can use the Triangle Angle Sum Theorem:
A + B + C = 180°
100° + 55° + B = 180°
155° + B = 180°
B = 180° - 155°
B = 25°
Therefore, the measure of angle B is 25°.