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)
• 100°
• 80°
• 280°
O 110°
The sum of the angles inside a triangle must equal 180°.
Given angles: 30° + 70° + x = 180°
Solving for x:
30° + 70° + x = 180°
100° + x = 180°
x = 80°
Therefore, the measure of angle x is 80°.
Correct answer: 80°