Question: One of the angles in a triangle measures x degrees. Another angle in the triangle measures y degrees. Which expression represents the measurement, in degrees, of the third angle of the triangle?
A) 180-(x+y)
B) 180-x+y
C) x+y-180
D) x+y+180
Correct answer: A
Grade: 8 | Topic: Geometry | Difficulty: Medium | Standard: 8.G.B.6