顶角是锐角的等腰三角形,一定是请选择CBA5i5t)W'j*a9\7D/d.\4O1~8\0P7S0T4p
A.锐角三角形9\7D/d.\4O1~8\0P7S0T4p
B.直角三角形9\7D/d.\4O1~8\0P7S0T4p
C.钝角三角形9\7D/d.\4O1~8\0P7S0T4p