填空题 Each symbol (triangle, square, diamond and circle) in this table has a value. The total of these values in each row and column is written at the end of the corresponding row or column. Now write down the value of each symbol.
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【正确答案】 1、Triangle=-4.2,Square=11.5,Diamond=-1.8,Circle=6.6    
【答案解析】(通过设未知数解方程,可以得出四种几何图形所分别代表的数值。)