1.

In an equilateral triangle \[{{45}^{o}}\] then:        

A.  \[{{90}^{o}}\]        
B.  \[\angle A=\angle B=\angle C=\angle D={{90}^{o}}\]       
C.  \[x<y\]     
D.  \[x>y\]       
Answer» D.  \[x>y\]       


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