How To Write a Proof - Proving Parallel Lines

[@benlee5039]

He's 100x better than my teacher. Those kids are lucky.

[@cadederrick6751]

Yeah, same. I wish my teacher would actually stand up and explain things instead of just giving us worksheets.

[@jillil1347]

my teachers good n funny but like hes too fast lmfao

[@marielw6590]

Ben Lee right my teacher just makes us go home learn it ourselves and then gives out tests

[@seraphimamare5487]

ong are teacher just taught us parallel lines and transversal then gave us this

[@imsoshiesty1449]

Facts

[@teamsqueezy7696]

This is so confusing, you helped made a little less confusing. Thanks

[@lanamich1491]

well geometry is killer and i already know i’m going to be binge watching your videos a lot.

[@bldjln3158]

Geometry is the easiest year you’ll have in a long time…

[@lukas.caldwell]

Couldn’t you just say since 1 is congruent to 2 that the lines are parallel by the alternate exterior angles converse.

[@brianmclogan]

yes

[@leslieah7060]

wait. I thought you could not do that because your proving the alternate exterior angle theorem in order to prove they are parallel, or else it would not be a proof.

[@lukas.caldwell]

Lily Martinez it didn’t tell you that you couldn’t use that theorem so I assume you can.

[@hayots_lernashkharh]

how the fuck do you understand this? You sound like ur chanting a pagan war cry or whatever.

[@lukas.caldwell]

@@hayots_lernashkharh it has been 3 years since I took geometry lmao

[@andrescelano4179]

one punch man

[@brianmclogan]

+Andres Celano bam

[@BlueSky-oe6wp]

Andres Celano MDJ

[@ktbmeli613]

Andres Celano this is y were here because we watch too much anime

[@CamilaHernandez-ev3eo]

@@ktbmeli613 FOR REAL THOUGH

[@mohammednageeb7807]

lol

[@Anika-tc6ih]

My teacher could never

[@SecretHaven_]

Our teacher just gave us bunch of theorems in our textbooks...when i saw "proof" & "statement" ..i already knew this was going to be hard, this video saved me!! Thxx

[@Sunshine08822]

Hey, im a 7th grader and this is really helpful! i have a test on angles and all that stuff. i was really confused and didnt know what the heck i was doung, so i saught help from KZbin videos and yours are the ones that really help! thank you so much for making these they really do help

[@syedshaheryar2439]

I'm doing this shit in 10th grade Advanced Placement Math and your here in grade 7 doing this 😱😱😱

[@Sunshine08822]

@@syedshaheryar2439 Holy crap...WHAT KIND OF SCHOOL AM I GOING TO?!? This is so frikin weird. You say 10th grade!? JEEZUZ my school is weird

[@syedshaheryar2439]

Maybe you are doing basics?

[@Sunshine08822]

@@syedshaheryar2439 possibly

[@angrycheese42]

Did you do algebra over the summer? Cause I’m 8th and doing geo

[@wonder_child2531]

Thank you for being available I've really had trouble to fine people who speak English to explain some lessons to me As I have Arab parents and English is My second language but I can understand way better in English Thank you once again :)

[@quickdropz]

I have a big test tomorrow in my geometry honors class, on coordinate geo and on angle relationships. My teacher has us doing some really complicated proof's and expects us to write like paragraphs. Kinda insane honestly. I wish I was at your school in your class :)

[@brianmclogan]

best of luck!

[@aryanshawla117]

sameeee

[@Spottycloth]

Same here, 5 years later

[@henwooja]

@@Spottycloth same here, 9 hours later

[@Carsmera]

I love this teacher mann

[@laineys5204]

I don’t get the last step, why do the lines have to be parallel if corresponding lines are the same measure?

[@brianmclogan]

it is a theorem

[@uglynaija]

Lainey S bruh it’s a proof you supposed to PROVE THAT LINES L AND M are parallel and THERE IS NO IF just prove it

[@laineys5204]

Rewind dude this was 3 weeks ago I get it now stop

[@lindacarrasco1185]

Thanks for making these videos. My teacher doesn’t explain in depth and this is perfect.

[@ethancorbitt8292]

Best online teacher no debate

[@alok3713]

I take first time english maths classes but it is soooooo...... Good

[@daviscleveland1283]

Great video!

[@brianmclogan]

you are very welcome!

[@JJShim-pc7li]

Comes in clutch every time

[@minli8344]

when doing two column you can't just jump into the prove in 2nd column, you need to do

[@yolandazhang5393]

This video really helped me thx!! also we call our reasons "justification"

[@brianmclogan]

I use that too, thanks!

[@Chuca1151]

don't know how you teach this shit without jumping head first off a cliff just trying to learn it makes me want to kms

[@brianmclogan]

been doing this for a very long time, walking for me is very easy, it used to be hard, math is no different, keep your head up

[@એપસેલ]

Is 1 and 2 is exterior angle and 3 is interior angle?

[@jupitr3gamin793]

Thank you very much mann..!

[@fredredpanda890]

This was very helpful. The video my teacher gave me to use did a not so good job at teaching.

[@10nfa64]

Brian, you are so awesome!

[@ayushpatel1962]

Love from India respected teacher I love your class sir🤗

[@brianmclogan]

Cheers!

[@ayushpatel1962]

@@brianmclogan I feeling proud that, I got reply from foreign. Sir where are you from?(Country). Love you sir I'm Aayush.

[@manjeetkaur7815]

Can you proof vertically opposite angle please

[@toastsnek3379]

Wish this dude was my teacher

[@salami7031]

how about (Vert.opp.angles)?

[@niyonzimajado]

You’re the best

[@brianmclogan]

Thanks!

[@abstractfalcon6852]

Amazing!

[@brianmclogan]

thank you!

[@tyronaquisedingle]

Man i wish this guy was my teacher

[@rubyblanco739]

so helpful

[@sknlu741]

i love- yuoi

[@cpgaming9026]

He is a teacher at my school

[@chuu922]

I think we also have to put inverse on it.

[@brianmclogan]

what do you mean?

[@chuu922]

if we gonna prove two lines are parallel or not, then each reason must write inverse in the front.

[@thes13yer98]

*converse, but yes

[@gymcapybara9496]

I am just wondering, if it says to prove that angle 2 is congruent to angle three, why are you proving that the lines are parallel?

[@cbcimutebi5564]

David Vorobeichik He said he made a mistake and that it was supposed to originally say prove: l || m

[@m7y]

Can you please come to uae 🙏🏻and teach your expectations are so perfect and clear

[@brianmclogan]

I wish,

[@m7y]

send your cv to adec

[@brianmclogan]

timing is off, maybe one day 😀

[@la1na._.m00n]

😭❤️

[@main2394]

Doing this is easier than trying to figure out the online pamphlet

[@brianmclogan]

Yes

[@ala6297]

Thanks you helped me :D

[@brianmclogan]

you are very welcome!

[@meghabhalla1124]

very helpful

[@brianmclogan]

happy to help

[@mattharry2627]

what grade are you teaching sir? grade 8?

[@brianmclogan]

9th and 10th

[@Kimi-uk6lf]

Hm they're teaching us this in grade 8 are we advanced or is this normal?

[@shawn4116]

Joaquim Ayrton Gancia I'm learning this in grade 11 lol

[@leslieah7060]

your advanced. lucky. I'm suffering as a sophmore.

[@એપસેલ]

Grade 7

[@brydrawzio2618]

hey man i really hope you see this comment. i was wondering wouldn't you call the last step your *"prove"* instead of *"m

[@nidadayoub3029]

But we learn this lesson on grade 7

[@brianmclogan]

awesome!

[@NG.f13]

Me too actually

[@sasmitamohanty856]

I wanna write it shortly sir

[@winnieandbros6663]

thx

[@kerryclark7161]

I wished he just explained to youtube instead of his students.

[@jada._marie]

You get what you get

[@neeshan1506]

then the students wouldnt learn

[@kevalshah5954]

I'm in the middle of my math test rn...

[@keshernid2215]

Uncle I'm 13 years old and I'm from India, we Indians would've solved this question in seconds, but you dragged it up to 5 mins. Your thumbnail was about the soultion for the question: to prove that the two lines at which the transversal cut are parallel to each other. But you proved it at the last 1 minute and the remaining 4 mins you were just wasting time.

[@theonlyziliks6049]

It sucks cause Ik this but like my teacher gives like ones that are 80 times harder I need help with those

[@juvairiasyed6077]

👏👏👏👏👏👏👊🤘✌

[@vibewtina2807]

Imagine knowing your teacher has 800k on youtube

[@gingermuro6388]

isn’t there many correct answers, like does it have to be just like yours?

[@denzelperez1561]

Denzel Perez

[@babypludo8801]

Think u r supposed to say m

[@jahnesaisquoi]

changing them to measure and non measure is mostly a honors thing?

[@SAMIFY_pipduckgay]

Xander Corvus Seems like a great teacher!

[@m7y]

explanation^^^^

[@brianmclogan]

😀

[@rajplalvats3811]

Johny sins😁😁

[@brahmagee1916]

🤨

[@yvngmasionmargiela2623]

R u Spanish m9 ???

[@brianmclogan]

no just a little spanglish

[@rajgaur9634]

You are indian?

[@tracygoldie6833]

He makes mistakes though. I'd never publish a video if there were mistakes.

[@helena-gz4bh]

oh well, everyone makes mistakes! that's probably why you're here, trying to understand proofs better just like me

[@kyliej8160]

everyone makes mistakes so why hide it?