Mathematics

The interior angles of a pentagon are 126o, 114o, y, 92o and 83o. Find the…

The interior angles of a pentagon are 126o, 114o, y, 92o and 83o. Find the value of y.
  • A.
    85o
  • B.
    95o
  • C.
    105o
  • D.
    115o
  • E.
    125o
Correct Answer: Option E
Explanation

Sum of the angle of a pentagon
= (2 x 5 – 4) x 90
= 540o
126 + 114 + y + 92 + 83 = 540
y = 540 – 415 = 125o