Respuesta :

#7  1 & 2, 3&4, 5&6, 7&8.

#8  1&4, 3&2, 5&8, 7&6. (choose two pairs)

#9  Alternate interior angles.

#10  Interior angles, I believe.

#11  30 degrees

#12  150 degrees

#13  110 degrees

#14  60 degrees

#15  x = 26; BGH = 78 degrees

#16  x = 26; GHD = 102 degrees

Hope that helps!