Which method would allow you to prove that all seven long diagonal lines are parallel?
-Measure the corresponding angles where the lines intersect the border. If the angles are congruent, the lines are parallel.
-Draw a diagonal connecting the opposite corners. If it makes an angle of 45º with each long diagonal, the long diagonals are parallel.
-Count the number of tick-marks on each diagonal. Diagonals with the same number of tick-marks are parallel.
-The seven long diagonals are clearly not parallel

Question

Which method would allow you to prove that all seven long diagonal lines are parallel?
-Measure the corresponding angles where the lines intersect the border. If the angles are congruent, the lines are parallel.
-Draw a diagonal connecting the opposite corners. If it makes an angle of 45º with each long diagonal, the long diagonals are parallel.
-Count the number of tick-marks on each diagonal. Diagonals with the same number of tick-marks are parallel.
-The seven long diagonals are clearly not parallel

anonymous · Answer

attachment

anonymous · Answer

@jim_thompson5910 can you help?

jim_thompson5910 · Answer

how far did you get

anonymous · Answer

no idea what to do

jim_thompson5910 · Answer

well to prove two lines are parallel, you have 3 options

jim_thompson5910 · Answer

if you show that the alternate interior angles are congruent, then the two lines are parallel

jim_thompson5910 · Answer

if you show that the corresponding angles are congruent, then the two lines are parallel

jim_thompson5910 · Answer

if you show that the same side interior angles are supplementary, then the two lines are parallel

anonymous · Answer

so would it be the first option?

jim_thompson5910 · Answer

yes you basically tackle the lines in pairs

anonymous · Answer

thanks!

jim_thompson5910 · Answer

np