Question

question in file..agggain..

Answer 1

Would you please not use proprietary file formats!

Answer 2

I can't help it, I am at school and I can't write the angles.

Answer 3

Do you mean those: \[''\]?

Answer 4

no

Answer 5

anyway, the characteristic property of similar triangles is, that the related side lengths have the same proportionality factor.

Answer 6

so 8

Answer 7

No, find the related sides and calculate the factor for a pair where you have given both lengths. Then apply that factor to the related side of the missing one.