How to Construct an Angle and a Perpendicular Bisector

[Oscar847]

hm arc is bent

giant ass protactor loolz

[intrapiano]

THank you so much!!! You're a good teacher

[45darkrai]

My question is,

How is constructing a perpendicular bisector similar to constructing an angle bisector? How is it different?

[minkusbc]

@45darkrai Good observation, since a straight line is 180 degrees, if you bisect it you get two 90 degree angles, hence, a perpendicular!

[lautnerandpatt]

Oh and another question: if you have to construct an obtuse angle bisector, would the steps be any different?

[minkusbc]

@lautnerandpatt No, the steps are the same. As a matter of fact the second step in erecting a perpendicular (a 90 degree line) is the same because you are bisecting a 180 degree angle to make two 90 degree angles.

[lautnerandpatt]

@minkusbc

OK thanks. And I used a protractor, but I see what I did wrong. I accidentally measured 142 degrees on the wrong side(the 142 on the left side). And thanks for all your help! =D

[minkusbc]

@lautnerandpatt NO, same steps.

[lautnerandpatt]

Thanks so much! I agree math teachers DO go to fast. This really helped me but I am still a bit confused because I was trying to make a 142 degree angle but it came out 152 degrees. Any advice on what I did wrong?

[minkusbc]

@lautnerandpatt Was this a 142 degree angle with a compass and straightedge, or with a protractor?

[HotPink2257]

Thank you! This helped me understand my homework much better :D

[SuperPokemonfan22]

@HotPink2257 sandra why would u even comment on this -.-

[HotPink2257]

@SuperPokemonfan22 john you just replyed on this and i needed help on hmwrk so to be nice i replyed! your just jelaous of my smarticles> :P

[HotPink2257]

@SuperPokemonfan22 john you just replyed on this and i needed help on hmwrk so to be nice i replyed! your just jelaous of my smarticles> :P jazz also looked on youtube for help!!!!

[HotPink2257]

@SuperPokemonfan22 john you just replyed on this and i needed help on hmwrk so to be nice i replyed! your just jelaous of my smarticles> :P jazz also looked on youtube for help!!!!

[ShiningStar9160]

thanks so much!!!!! very helpful n great job:D!!

[TheElectronicNerd]

Thanks so much!

[Za3DoRzX]

Nice. 

[carltischbein]

Thanks for the help. Just what I needed! Very clear and well done.

[losersfantasy123]

Thanks you SO much! That helped me TONS!

[Italianscaneat]

Very informative and nicely done. Thanks for your help!

[rupan94]

Very clear explanation.thanks for the video.

[tenshiuta]

You really helped me here with this! Thanks for the vid :)

[jcrocks222]

thanks alot i have a math test coming up and you really saved me thanks for the neatness and explaining.

[orenoliv]

like 'tis , like this. Thank U.

[SkateShoeReviewer]

this video helped a lot with my homework, BUT I HATE GEOMETRY!!

[GlazeBoiX]

why the fuck are u so slow and neat. just teach us and get it over with.

[minkusbc]

@GlazeBoiX Because most student complaints about their teachers are that they go too fast. I now have software that allows me to have a "virtual" compass, so I maybe able to use that instead. As to neatness, well when you use this to build houses as I have, accuracy and neatness is important.

[ruthyboo069]

@GlazeBoiX thats rudeeeeeee

[adenandbelle]

thank you sooooo much :)

[jashanmundi]

really helped. thanks!

[jhettwilder]

this video helped alot thanks :)

[Kazandravk]

Thanks!!

I really had trouble with my homework, now it's all done! :D

[devilman819]

someone is married!!!!! nice ring lol

[raychemicallover]

omg, its sunday and i totally forgot wat we did friday

thnx! :D

[PatricoAntonio]

Thank God for this video... I'm gonna do well for y Maths prelims tmr:)

[mbalgobin]

this really helps! thanks!! :)

[bobbyt2012]

Ah ha! We did this in my math class, I'll definetly forward her the link to this video.

[geronimoaris]

u are the best!!!! :D thanks!!!!