Given an inequality, which of the following operations does not change the direction of the inequality? (1 point) Divide both sides by a negative number
Multiply both sides by a negative number
Reverse the sides of the inequality
Subtract both sides by a number

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