How did you solve this?

Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.

State one method by which you can recognize a perfect square trinomial.

The perimeter of △cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.