PLEASE HELP CIRCUMFRANCE OF A CIRCLE

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

Really need ! 35 create an equation that can be used to find the value of x? hint: what type of angle pair do you see? here are the questions to answer, after you create an equation: 1) what should be the total amount used for this type of angle pair? explain how you know. 2) what is the answer to your equation for "x"? 3) after you find your answer for "x" in your equation, find the degree measurement for angle aed?