Which statement is logically equivalent to the following conditional statement?
if it is a rectangle, then it does not have three sides.
if it is not a rectangle, then it has three sides.
if it has three sides, then it is not a rectangle.
if it does not have three sides, then it is a rectangle.
if it is not a rectangle, then it does not have three sides.

y=1/4x-4

step-by-step explanation:

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq