Which shows the equation y= -1/2x + 5 written standard form ? x + 2y= 10
x - 2y=10
x+ 2y=-10
x+2y=-10
x - 2y = 10

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct