it will mean a lot and it would me

The answer to your question is below

Step-by-step explanation:

Data

∠1 = 105°

Process

a)

∠2 = 180 - 105 = 75°          supplementary angles

∠3 = ∠2 = 75°                     supplementary angles

∠4 = 105°                            vertical angles

∠5 = 105°                            corresponding angles

∠6 = 180 - 105 = 75°           alternate interior angles

∠7 = ∠6 = 75°                      supplementary angles

∠8 = 105°                             alternate interior angles

b)

∠3 = 80°

∠1 = 180 - 80 = 100°           supplementary angles

∠2 = 80°                              vertical angles

∠4 = 100°                              supplementary angles

∠5 = 100°                             supplementary angles

∠6 = 80°                               alternate interior angles

∠7 = 80°                               corresponding angles

∠8 = 100°                              supplementary angles

b: 1 is the final answeer! : )

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!