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| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| polyhedral angle (ˌpɒlɪˈhiːdrəl) | |
| —n | |
| See also solid angle a geometric configuration formed by the intersection of three or more planes, such as the faces of a polyhedron, that have a common vertex | |