Chapter 12.6, Problem 1E

CONCEPTS

All conics can be described geometrically by using a fixed point $F$ called the________ and a fixed line $l$ called the ________. For a fixed positive number e the set of all points $P$ satisfying

$\frac{}{}=e$

is a__________. If $e=1$, the conic is $a(n)$ _____; if $e<1$, the conic is $a(n)$ _____ and if $e>1$, the conic is a(n) ____. The number e is called the _______ of the conic.