1.

In a circle, the major arc is twice the minor arc. The corresponding central angles and the degree measures of the two arcs are

A.  \[CE||BA\]and \[\angle ECD={{65}^{o}}\]                     
B.  \[\angle ACB=\]and \[{{60}^{o}}\]
C.  \[{{55}^{o}}\]and \[{{70}^{o}}\]        
D.  \[{{90}^{o}}\]and\[l||m,\]
Answer» D.  \[{{90}^{o}}\]and\[l||m,\]


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