Question 2 (a)
You want to show that ΔART≅ΔPEN
If you have to use SSS criterion, then you need to show:
i) AR = (ii) RT = (iii) AT=
a)
Using SSS criterion, if ΔART≅ΔPEN , then the corresponding sides of both the triangles must be of same length.
Hence,
i) AR = PE ii) RT = EN iii) AT = PN