heptagonal 

  1. 形容詞
七角形的, 七邊形的

    
                        
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例句

                

                    
    
                                                    
  1. 
                                The building is heptagonal and has a fireplace in the center.                            
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  2. 
                                The 17th-century Jacobean pulpit is an unusual heptagonal design.                            
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  3. 
                                The main body of the twelve-sided shape, contained a heptagonal baptismal font.                            
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                                316 = 22 × 79. 316 is a centered triangular number and a centered heptagonal number                            
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  5. 
                                Figurate numbers representing heptagons (including seven) are called heptagonal numbers.                            
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