Question

Slopes of parallel and perpendicular lines help

Answer 1

Will give fan and medal

Answer 2

I was thinking C D A C but i', not sure

Answer 3

I'm* and it's just an educated guess

Answer 4

so what do you think about 3) ?

Answer 5

perpendicular lines make a 90 degree angle when they cross each other

Answer 6

D?

Answer 7

well. do they look perpendicular? and parallel?

Answer 8

Yeah

Answer 9

so, if they're perpendicular, that means they're crossing each other and making 90 degrees angle, well... where's the angle?