Plane H is shown.

Which points are coplanar and noncollinear?

points A and D

points B and C

points A, C, and D

points A, B, and D

Explanation:

hello,

in your question, you failed to attach the diagram to use to answer your question. however i will give a similar question with diagram and explain in details what co-planar and co-linear are and i believe with this you will attempt your question with ease.

co-linear : two points are said to be co-linear if they line on the same line.

plane: a plane is a flat surface consist of points that extends infinitely far.

co-planar: two or more points are said to be co-planar if they all lie in the same plane

please find in the attached file the diagram i will use to explain further.

in the diagram, AB,BF,EF,AC,CE,DC are all lines while ABEF,ABCD,BDF are planes. thus, A,H,B are co-linear since they all lie on the same line. also, H and J are not co-linear.

the points A,B,E, are co-planar because they all lie in the same plane ABEF while the points A,B,D,F are not co-planar because A,B,F lie on the same plane ABEF while D lies outside the plane.

b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.