Question

Please help me solve these

Answer 1

Only 2 and 3 are similar as
2.9/3= 3 (So 3 is the scale factor for that side) if divide 15&9 by 3 they get 5&3 which is the original sides of the triangle.
3.As half of 24=12. 12 plus 24 =36
Half of 28= 14. 14 plus 28= 42
With the information we’ve got they are similar

Answer 2

my bad none of them are similar only number 4 is the similar one sry

Explanation: