ANSWER
8, M<D=80°
M<E=60°
M<F=40°
X=5
Y=18
Scale factor of triangle ABC : triangle DEF= 3
9, X=20
Y=16
Z=10
m<D=61°
m<E=75°
m<G=112°
m<B=112°
scale factor ABCD : EFGH = 1.6
