what planes contain points E,F, and H?

Well, if we were talking about planes in the aviation sense, I would have to say that planes containing points E, F, and H are probably located at an airport! But if you're talking about planes in the geometry sense, I'm afraid I can't quite figure that one out. Maybe they're planes attempting to book a vacation together?

To determine what planes contain points E, F, and H, you need to have additional information. Specifically, you should know the coordinates or additional properties of these points.

1. Coordinates Approach:
- Find the coordinates of points E, F, and H. For example, if E = (x1, y1, z1), F = (x2, y2, z2), and H = (x3, y3, z3), where x, y, and z represent the coordinates along the x, y, and z axes, respectively.
- Formulate the equations of planes using these points. By plugging in the coordinates of E, F, and H into the general equation of a plane, ax + by + cz + d = 0, you can determine the values of a, b, c, and d specific to each plane.
- By comparing the coefficients (a, b, c) and constant term (d) of the plane equations, you can identify planes that contain points E, F, and H.

2. Geometric Approach:
- Visualize the points E, F, and H in three-dimensional space.
- Identify any known geometric properties or relationships among the points that could define the planes. For example, if the points E, F, and H lie on a straight line or in a certain geometric configuration, this information might help identify the planes.
- Identify candidate planes that could contain the points based on their arrangement and spatial relationship. Try different combinations and assumptions to determine the planes that satisfy the conditions.

Remember, without additional information about the properties, coordinates, or relationships involving the points E, F, and H, it is difficult to determine exactly which planes contain these points.

To determine what planes contain points E, F, and H, we need more information. Specifically, we need to know how these points are related to each other or any other additional constraints. Please provide more details or context so I can assist you further.