State the postulate or theorem that justifies each statement
Given: c ll d
1.) ∠5 ≅ ∠7 corresponding angles are equal
2.) ∠3 ≅ ∠6 alternate-interior angles are equal
3.) m∠6 + m∠7 = 180 consecutive interior angles are supplementary
4.) bd two lines in a plane perpendicular to the same line
I'm really lost, can someone please explain to me how this is done?
Thanks, but how exactly did you come up with those answers? I don't understand how I'm supposed to solve these kinds of questions. I really don't understand postulates and theorems at all. Could someone break it down for me?