Question

please solve the 7th question!!

Answer 1

From the triangle ABC and DEF
BC = ED
/_B= /_E
/_A=/_F
.•.triangle ABC is concurrent to triangle DEF (•.• ASA congurency)

Answer 2

from hint
$angle \: c = ang. \: d$
so from Angle-side-Angle congruency.
tri. ABC =~ tri. FED