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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. |
obtuse angle (ŏb-t s') Pronunciation Key
An angle whose measure is between 90° and 180°. Compare acute angle. |
An angle that measures more than 90 degrees but less than 180 degrees. (Compare acute angle and right angle.)