It would be pi over 6, 5 pi over 6, and 3 pi over 6.
X multiplied by 7+5=89
X x 7=89-5=84
X x7=84 divide both sides by 7
x=12
Answer is option D, The diagonals bisect each other …. Ac || BD of ABCD is a parallelogram
Add all three expressions up and set them equal to 180 degrees, because there are 180 degrees in a triangle.
