*AB*>

*AC*, but it's definitely an isosceles triangle. What do you know about isosceles triangles? The big thing that's always true about them is the angles across from the equal sides are also equal. SO, the only thing we know for sure is that the angles across from our unequal sides have to be UNequal.

*y*is acrosss from

*AC*, and

*z*is across from

*AB*, so

*y*cannot equal

*z*. Our answer is (E).