The angles of a triangle measure 30°, 70°, and x. The Triangle Angle Sum Theorem states that the sum of the angles inside a triangle must equal 180°. Based on this theorem, what is the measure of angle x?
(1 point)
O 100°
O 80°
O 280°
O 110°
To find the measure of angle x, we can use the Triangle Angle Sum Theorem.
30° + 70° + x = 180°
Combine the known angles:
100° + x = 180°
Subtract 100° from both sides:
x = 80°
Therefore, the measure of angle x is 80°.
Correct answer: O 80°