quadrilaterals 

  1. 名詞
quadrilateral複數: 四邊形
方形物
方形地
(軍事)方形要塞

    
                        
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例句

                

                    
    
                                                    
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                                Simple quadrilaterals are either convex or concave.                            
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                                Specifically, we are learning about quadrilaterals .                            
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                                And that's your quadrilaterals except for this one of course.                            
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                                So, combinatorially, our six quadrilaterals are all the "same".                            
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                                This is called the "isoperimetric theorem for quadrilaterals ".                            
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