Question

ΔABC ∼ ΔQRS
Find the missing side length, m.
m = ?

Answer 1

m = 21

Explanation:

since the triangles are similar then the ratios of corresponding sides are in proportion , that is

`(QR)/(AB)` =
`(QS)/(AC)` ( substitute values )

`(m)/(7)` =
`(6)/(2)` = 3 ( multiply both sides by 7 to clear the fraction )

m = 7 × 3 = 21