Intersection of two planes (coincident, parallel or intersecting in a line), intersection of three planes, point of intersection, line of intersection, coincident planes, or no intersection (triangular prism or a pair of parallel lines)
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Intersection of two planes (coincident, parallel or intersecting in a line), intersection of three planes, point of intersection, line of intersection, coincident planes, or no intersection (triangular prism or a pair of parallel lines)