Question

Question 1 of 10
What is the value of x ?
A. 160°
B. 50°
C. 55°
D. 20°

Answer 1

it is B

Eplanation:

180-155=75 (straight line add up 180 degrees)

75+55+x=180

130+x=180(angles in triangle also add up 180 degrees)

x=180-130(rearranging formula)

x=50, which is option letter B