hi all attached is a question and answer from an exam paper which i am having trouble with.
firstly i do not see how they can state the ASA rule without further information.
secondly i would have drawn the perpendicular bisector of line YZ and labelled the point of intersection with YZ as W then stated
YW = WZ (common)
XY=XY (given XYZ isoscles triangle)
therefore triangle congruent SSS
any ideas please?