Question

The length of the major axis of the ellipse below is 13. What is the sum of the lengths of the red and blue line segments

Answer 1

13

Explanation:

If the length of a major axis of an ellipse is 13, the sum of the lengths of the red and blue line segments is 13.

P = point in the figure

F1 = focus

F2 = focus

PF1 + PF2 = 13