Ask your own question, for FREE!
Mathematics 8 Online
OpenStudy (anonymous):

Help! Given: Line AB is perpendicular to Line FC Line DE is perpendicular to Line FC Line AB is congruent to line DE Angle DEF is congruent to Angle BAC

OpenStudy (anonymous):

OpenStudy (anonymous):

uhh, I can't open this type of file :/ maybe a link?

OpenStudy (anonymous):

It gives a two-column proof then asks Which figure correctly displays this proof?

OpenStudy (anonymous):

I can post the figures

OpenStudy (anonymous):

or you can draw it XD.

OpenStudy (anonymous):

These are the choices

OpenStudy (anonymous):

alright so, first, AB is perpendicular to FC

OpenStudy (anonymous):

check the first one: no because they don't form 90 angles.

OpenStudy (anonymous):

Statement Reason Line AB is perpendicular to Line FC Line DE is perpendicular to Line FC Given Line AB is congruent to Line DE Angle DEF is congruent to Angle BAC Angle FDE=90 degrees and Definition of Angle ABC=90 degrees Perpendicular Lines Angle FDE is congruent to Angle ABC Substitution Triangle ABC is congruent to triangle EDF Angle-Side-Angle

OpenStudy (anonymous):

That's the two-column proof ^

OpenStudy (anonymous):

OpenStudy (anonymous):

Do you have a guess?

OpenStudy (anonymous):

No idea...

OpenStudy (anonymous):

Alright. With the very first part of the proof, you can see if the choice makes sense. Look at lines FC and AB. See if they look perpendicular and tell me what yo think.

OpenStudy (anonymous):

I think its the first choice

OpenStudy (anonymous):

That's the only one that has an actual line "FC"

OpenStudy (anonymous):

Ok, do you see where I'm coming from though @J.L. ? Exactly. All of the others don't make sense.

OpenStudy (anonymous):

Yea, that's what I was doing but I was getting confused

OpenStudy (anonymous):

Ok. Just making sure :)

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
XShawtyX: Art, Short Writing Assignment: Imagining Landscapes
7 hours ago 2 Replies 0 Medals
XShawtyX: Chemistry, Help ud83dude4fud83cudffe
7 hours ago 13 Replies 1 Medal
kaelynw: tried a lil smt, the arm is off but i like the other stuff
18 hours ago 27 Replies 3 Medals
kaelynw: art igg
16 hours ago 14 Replies 2 Medals
XShawtyX: Art
3 days ago 6 Replies 0 Medals
Nina001: teach me how to draw or just tell me the basics
3 days ago 2 Replies 1 Medal
XShawtyX: We doing another drawing gimme ideas to add to this
3 days ago 9 Replies 1 Medal
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!