In △ ABC and △ XYZ, if AB = XY, BC = YZ and ∠ ABC = ∠XYZ = 90∘, then by which postulate is △ABC ≅△XYZ ?
SAS
In △ ABC and △ XYZ,
(i) AB = XY .......(given)
(ii)∠ABC=∠XYZ=90∘ .....(given)
(iii) BC = ZY .......(given)
⇒ △ABC≅△XYZ ......(SAS Postulate)