90 degrees is the angle at intersection
12*13*14*15*16 = 524160
Idk how to get this answer actually. It's just my first guess, and it happened to be right.
<u>The x and y coordinates of the origin is equal to (0, 0), which is the point of intersection of the x-axis and y-axis. The x and y coordinates of a point on the x-axis is of the form (a, 0), and here the y coordinate of the point is equal to zero.</u>