Question

Which describes the intersection of planes A and B?

line CD
line ED
point C
point D

Answer 1

the second choice is the correct one

Answer 2

line ED

Explanation:

Let analyse all possible answer:

a. line CD

From the photo, you can see it lies on the plane A and only point D is either on plane A or B.

b. line ED

From the photo, you can see the point E and D are lying on plane A and B.

c. point C

Only in plane A

d. point D

point D is on plane A or B.

However, to describes the intersection of 2 planes, we usually use the a line or a segment to have a better explanation because it goes through all the common points of the two planes