A right-angled triangle.
| 单词 | θ98590 | 
| 释义 | the world > space > shape > angularity > specific angular shape > 			[noun]		 > triangle > specific (3)		 orthogonium1570 A right-angled triangle. right triangle1583 a triangle containing a right angle. orthogonion1653 = orthogonium, n. | 
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