Question

Can someone please help to explain this?

Answer 1

`(PQ)/(DE)` =
`(4)/(6)`

Explanation:

Given

Δ PQR ~ Δ DEF

Then the ratio of corresponding sides are equal

The corresponding letters in the names of the triangles gives the corresponding sides.

Thus PQ/DE, QR/EF, PQ/DF

In this case

`(PQ)/(DE)` =
`(4)/(6)`