ch 12 section 3 vocab

Question 1

an ellipse is the

Answer 1

set of points P(x,y) in a plane such that the sume of the distances from any point P on the ellipse to two fixed points F1 and F2 is the constant sum d= PF1 + PF2

Question 2

foci of an ellipse

Answer 2

2 fixed points F1 and F2 that are used to define an ellipse

Question 3

major axis

Answer 3

the longer axis of the ellipse that passes through both foci

Question 4

vertices of the ellipse

Answer 4

endpoints of the major axis

Question 5

minor axis

Answer 5

shorter axis of the elllipse

Question 6

co-vertices of an ellipse

Answer 6

endpoints of the minor axis

Question 7

the major and minor axes are

Answer 7

perpendicular and intersect at the center of the ellipse

Question 8

foci with center at (h, k)

Answer 8

(h+-c, k) and (h, k+- c)