Types of Angles and Angle Relationships

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  • Опубликовано: 30 июн 2024
  • What are angles? What kinds of angles are there and how do they relate? Vertical angles, supplementary angles, complementary angles, corresponding angles, we cover them all in here!
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Комментарии • 236

  • @merigrrrl
    @merigrrrl 4 года назад +615

    When you have a geometry test tomorrow and you understand absolutely nothing

  • @Majesticmex
    @Majesticmex 2 года назад +97

    2:38 Vertical Angles
    4:23 Alternate Interior Angles
    4:32 Alternate Exterior Angles
    5:06 Corresponding Angles

  • @sarmientoenricomiguelv.562
    @sarmientoenricomiguelv.562 4 года назад +113

    How can you objectively dislike his work?
    He did a fine job
    Better than many I should say

    • @sydney3495
      @sydney3495 3 года назад +9

      better than my teacher smh

  • @BULLT-fz8mr
    @BULLT-fz8mr 3 года назад +85

    this is just so good man this guy saved me from the final exam

  • @ronex7401
    @ronex7401 3 года назад +28

    no one: me in a job interview
    the manager: before we start how opened is the door
    me:damn i should've listened in math class

  • @jackyliang4939
    @jackyliang4939 3 года назад +26

    This is better than a 2 hour lecture

  • @jxstgio8214
    @jxstgio8214 3 года назад +26

    this channel is heaven for people who dont have good teachers

  • @AnikIsGreat
    @AnikIsGreat Год назад +10

    Thank you so much dude, I’m four years in the future from when this video was published and you still managed to help me clear up some confusion before the test 🔥

    • @Z3NTY-
      @Z3NTY- 5 месяцев назад

      Dang it I’m one year later than you. You got to him first

  • @ambivac
    @ambivac Год назад +1

    I had a little bit of trouble understanding this lesson, but when I actually did the work with what you taught us, it just clicked for me. Thank you!

  • @user-ql7qt1dq2z
    @user-ql7qt1dq2z 2 года назад +5

    Thank you very much for this video!! :) you help a lot of people, including me. 😊

  • @marianacosta7178
    @marianacosta7178 Год назад

    Thanks for your video, it helped me a lot w my studies for taking the SAT

  • @diavolosbigtiddies5016
    @diavolosbigtiddies5016 3 года назад +1

    Really helped me for my exam ,Thank you!❤️

  • @jainishvadgama7247
    @jainishvadgama7247 2 года назад +1

    Thank you. This is very important and easy to understand. 👍

  • @jenmlamas5403
    @jenmlamas5403 3 года назад +3

    Thankyou this really helped me a lot

  • @visualquantum5279
    @visualquantum5279 3 года назад +1

    littrely thanks alot...no word's to describe that how much it helps me......thank you so much ❤️❤️❤️😭😭😭😭

  • @AslamKhan-tv2ct
    @AslamKhan-tv2ct 4 года назад +3

    Excellent way of explaination professor

  • @leeknow250
    @leeknow250 3 года назад +1

    Thank you for the video, well there is something I didn’t understand which is the (angles generated by transversals) thing. I didn’t take this lesson at school yet that’s why it’s hard for me to understand but I would appreciate it if you could please make a video about this.

  • @florxz260
    @florxz260 3 года назад +3

    Thank you so much professor this video was super helpful!

  • @omarisaintjuste1665
    @omarisaintjuste1665 3 года назад +1

    Thank you this video was very helpful

  • @kyleandrei3444
    @kyleandrei3444 3 года назад

    This really Helped me With my module

  • @hephaestus511
    @hephaestus511 4 года назад +11

    About to do an accelerated Geo test in 20 minutes...if I bomb this I have to drop the class, wish me luck.

    • @hephaestus511
      @hephaestus511 3 года назад +4

      Samuel Acret I dropped the class lol

    • @domainii7089
      @domainii7089 3 года назад +1

      Rippp

    • @ash-sp3nt
      @ash-sp3nt 3 года назад +1

      @@hephaestus511 LMAODIWAUSI ME

  • @franchesca6430
    @franchesca6430 3 года назад +1

    Thank you for making a video about this :D

  • @Thaji_
    @Thaji_ 4 месяца назад

    Thank U so much U have cleared all my doubts (*watching this video after six years*)

  • @Ari_the_hopeless
    @Ari_the_hopeless 4 месяца назад

    Thank you so much dude! You just saved me from sitting through a 1hr lecture and not understanding a word

  • @durgarameshan8535
    @durgarameshan8535 3 года назад

    This is really helpfull to me when I am in online class

  • @punyanuchjarugosol7307
    @punyanuchjarugosol7307 2 года назад

    I am having a geometry quiz next week and I understand everything just by watching this video than you Professor David

  • @CohenBowers
    @CohenBowers 2 года назад

    Thank you so much, you helped me not fail math class

  • @toybayonet5542
    @toybayonet5542 3 года назад +3

    Is there anyone here that is just learning for fun?

  • @joud3267
    @joud3267 2 года назад +1

    He is amazing saved me at the last minutes

  • @cameronbastarache7896
    @cameronbastarache7896 5 месяцев назад +1

    Hey, just wanted to say you did a great job. But, there is one thing, A cercle has one line

  • @amarareddyjadda3106
    @amarareddyjadda3106 6 лет назад +27

    Really we are very lucky to have a proferser like you DAVE

  • @maxwellmeows
    @maxwellmeows 2 года назад

    You saved my life! 😭💕

  • @scottmccollough262
    @scottmccollough262 9 месяцев назад +2

    Thanks!

  • @maryamsiddique9709
    @maryamsiddique9709 6 месяцев назад

    You are a good teacher

  • @bloodypoison
    @bloodypoison 18 дней назад

    well, im a 6th grader with an exam tomorrow, this helped a lot! ^^

  • @mayaavabennett3090
    @mayaavabennett3090 4 года назад +2

    that intro is great

  • @weishao5105
    @weishao5105 8 месяцев назад

    Great videos!

  • @jackofspades7852
    @jackofspades7852 5 лет назад +2

    Thanks this was really helpful

  • @oahugt9292
    @oahugt9292 5 лет назад +2

    amazing video

  • @ajbeew2257
    @ajbeew2257 2 года назад

    Thank youu so so so much!!

  • @TheBruvioli
    @TheBruvioli 2 года назад +1

    Thanks

  • @loisakande3421
    @loisakande3421 4 года назад +5

    👍👍, nice!!! makes me love maths, good work.

  • @phlippy177
    @phlippy177 4 года назад +48

    5:27 omg this is to big for my brain
    Edit 1: oh 2 likes nice
    Edit 2: omg 8 likes
    Edit 3: oml 34 likes noice
    Yeah count with me
    Edit 4: omh 36 likes noink
    How long will this go for xD

  • @pikleman5880
    @pikleman5880 2 года назад

    You know this video is good because my math teacher used it to explain angles.

  • @beyblades8494
    @beyblades8494 4 месяца назад

    my teacher does not teach nothing they need more teachers like him in life

  • @samarabhikha1010
    @samarabhikha1010 3 года назад +1

    my math exam is today on algebra angles and geometry and construction and loci please wish me luck!

  • @momocoww
    @momocoww 9 месяцев назад

    tyy sm for this vid helped a lot

  • @DanielTM_JB
    @DanielTM_JB 5 лет назад +7

    Omg thx so so SO much. now i won't fail my test

  • @joshuaquarrie5510
    @joshuaquarrie5510 2 года назад

    thank you

  • @theampworldpiperssquad..am4557

    Very good

  • @skyonqt
    @skyonqt 6 лет назад +5

    THANK YOU SO MUCH!! THIS WAS SO HELPFUL.

  • @nasrinmohamedomar1083
    @nasrinmohamedomar1083 4 года назад +2

    I love it 😻 soso much 🥰🥰

  • @Unkown242
    @Unkown242 3 года назад +1

    I am preparing for SAT at home. Lmao! Best decision ever!

  • @RadoHudran
    @RadoHudran 2 года назад

    What's the building at 0:55? Looks awesome

  • @jazlynrodriguez5696
    @jazlynrodriguez5696 2 года назад

    5:18 explaining algebraic stuff for angles

  • @Survival380
    @Survival380 8 месяцев назад

    i have a math test in 2 days and it covers 4 topics and i dont know 2 of them so im watching this to learn one of them which are angle relationships
    also the test is 4 grades so wish me luck

  • @kyryns2559
    @kyryns2559 4 года назад +7

    i like the intro lol

  • @tWiGgAyyy
    @tWiGgAyyy Год назад +1

    Can someone please explain the comprehension problem?

  • @juharajemal8966
    @juharajemal8966 3 года назад

    Thank you thoe

  • @aderze2825
    @aderze2825 2 года назад +2

    6:25 I’m still confused on how he solved it

  • @jarif8471
    @jarif8471 2 года назад +1

    The intro was so funny

  • @raghad2265
    @raghad2265 4 года назад +1

    YOU SAVED MY LIFE THAN YOU!!!!

  • @alka_3.4
    @alka_3.4 Год назад

    and I solved that all by myself?! Yay!

  • @alansalazar6466
    @alansalazar6466 3 года назад

    I almost gave up on life half way through the video but BOOM

  • @lemenadv2519
    @lemenadv2519 Год назад

    Nice

  • @sushmamagar7798
    @sushmamagar7798 4 года назад +1

    i like it

  • @avocadoo-1978
    @avocadoo-1978 4 года назад +4

    I still don’t get it why x= 50

    • @dg_1183
      @dg_1183 4 года назад +2

      (3x+10)+(x-30) and since it's supplementary it's 180 degrees;
      combine like terms
      4x-20=180
      then add +20 to twenty and 180, and that will equal to
      4x=200
      and divide them by 4, it will equal to
      x=50
      Sorry if I was late

    • @kenny_eats_many
      @kenny_eats_many Год назад

      @@dg_1183 I don't understand wha?

  • @milayemilaye
    @milayemilaye 3 года назад

    fankew indeed for the information

  • @haileymunguia6769
    @haileymunguia6769 2 года назад

    Good guy

  • @Mikasaakaman-px2tx
    @Mikasaakaman-px2tx 6 дней назад

    deym another terms that needs to be memorizee

  • @abhiveersingh1358
    @abhiveersingh1358 2 года назад

    This explanantion better than a school

  • @luisfeguzman1139
    @luisfeguzman1139 5 лет назад

    Thanks, man

  • @kobeplays798
    @kobeplays798 4 года назад +13

    What grade are yall in? I'm in 7th

  • @quanxist
    @quanxist 2 года назад

    anyone care to explain how he solved 5:20 ?? i don't really understand it no matter how many times i replay the video and i'm not an english speaker so i don't quite understand what he's saying. please please help 😭😭😭

    • @carultch
      @carultch Год назад

      At 5:20, we are given two expressions, for two angles that combine to form a right angle, that is a 90 degree angle. Thus we simply add the two angles, and add them up to 90 degrees.
      3*x + x + 10 = 90
      Gather like terms:
      4*x + 10 = 90
      Rearrange to make x the subject:
      x = 80/4
      Solution:
      x = 20

  • @kaemori6975
    @kaemori6975 3 года назад

    im doing a test rn 😀😖

  • @erikgruber9736
    @erikgruber9736 3 года назад

    0:53 Valencia!

  • @v3nnyvill340
    @v3nnyvill340 6 лет назад

    Ty alot yo✌

  • @hezekiahstallings3306
    @hezekiahstallings3306 3 года назад +2

    I like ya cut g

  • @jeanieloque3865
    @jeanieloque3865 4 года назад +2

    i get it but when the arrow goes down the number goes up!!!!!!

    • @kordru
      @kordru 3 года назад +1

      which axis, X or Y?

  • @stormclanofficial8377
    @stormclanofficial8377 4 года назад +9

    You are godly こんにちは

  • @gabrielagomez4939
    @gabrielagomez4939 6 лет назад +4

    You look so funny in the beaging😁

    • @sdhaunter9137
      @sdhaunter9137 4 года назад

      be careful what you say on youtube, it could easily get on onto r/youngpeopleyoutube

  • @allessandraphillipspatters9703
    @allessandraphillipspatters9703 3 года назад

    2:30

  • @nandalalpdjaiswal7148
    @nandalalpdjaiswal7148 7 месяцев назад

    Whats is e and b

  • @janaelmendoza4486
    @janaelmendoza4486 5 лет назад +2

    at 37sec in the video mouth "wide open" 😂

  • @jerssoncruz1626
    @jerssoncruz1626 4 года назад +1

    Make it shortr time

  • @Grabiffy
    @Grabiffy 2 месяца назад

    I dont understand the checking comprehention part can somone explain.

    • @ivorscott
      @ivorscott 2 месяца назад

      There's two angles with algebraic definitions. You ask yourself what's the relationship between them?
      Are they?
      Vertical angles (nope)
      Adjacent angles (nope)
      Alternate interior angles (nope)
      Alternate exterior angles (nope)
      Same side interior angles (nope)
      Corresponding angles (nope)
      Complementary angles (nope)
      Unfortunately, they don't apply to any of these. However, both are vertical angles to other angles. When we look into that approach we see the corresponding vertical angles (opposite angles of each) qualify as "Same side interior angles". Since vertical angles are equal to each other we can use the same expressions for our equation. Same side interior angles add up to 180 degrees. Therefore we simplify the following expression for the answer:
      3x + 10 + x - 30 = 180

  • @stormii6582
    @stormii6582 3 года назад

    just got my new module and absolutely dont understand this freaking math subject

  • @Marco_Carbajal
    @Marco_Carbajal 2 года назад

    what is it the relation ship calle between angles a and c at 5:00

    • @carultch
      @carultch 2 года назад

      Angles a and c are supplementary angles.

    • @Marco_Carbajal
      @Marco_Carbajal 2 года назад

      @@carultch i forgot I commented this and I know now but thanks

  • @auvare5638
    @auvare5638 3 года назад

    Took me an hour to watch this cause mom wanted me to do extra credit instead of my actual work

  • @JetPlayzRB
    @JetPlayzRB Год назад +1

    5:34 how do u solve that

    • @levishair5223
      @levishair5223 Год назад +1

      Since the angle relationship in the diagram is complementary we know that both those angles added up will equal to 90. Write the equation then solve for x, ones you’ve solved for x substitute

  • @nikkagata8036
    @nikkagata8036 6 лет назад +2

    Sorry dave but....did I get you wrong? The last pproblem, I get 40 but it's show 50 so I'm very confuse... =4x + 10-30 ( =20 ) = 180
    =4x + 20= 180
    = 4x + 160 (60÷4)= 180 ( 60÷4=40)
    x=40
    I GET THE ANSWER OF 40 BUT IT'S SHOW ON THE VIDEO THAT THE ANSWER IS 50...I DON'T KNOW WHY...

    • @ProfessorDaveExplains
      @ProfessorDaveExplains  6 лет назад +4

      10 - 30 = -20, watch your subtraction! so 4x = 200, x = 50.

    • @brokenfrog8462
      @brokenfrog8462 9 месяцев назад

      I totally missed the part where you add 20 to 180, why does my brain make these errors lol

  • @excelokorie1274
    @excelokorie1274 3 года назад

    I don't understand the comprehension, please can someone explain it to me

    • @carultch
      @carultch Год назад +2

      Relate the comprehension figure at 6:30 to the figure at 4:17, that names all the angles generated by the transversal through the parallel lines.
      Observe that we are given expressions for angle a, and angle g. Now simply navigate through the transversal angles to form a relationship between angle a and angle g. Angles a and e are corresponding angles, which are therefore equal. Angles e and g add up to a straight angle, which means they are supplementary and add up to 180 degrees. This means that angles a and g add up to 180 degrees, such that the two given expressions must add up to 180 deg.
      Thus:
      (x - 30) + (3*x + 10) = 180
      Gather like terms:
      4*x - 20 = 180
      Rearrange to make x the subject:
      x = 200/4
      x = 50

  • @Shadow904YT
    @Shadow904YT 5 месяцев назад

    where are reflex angles

  • @poguecriplife4376
    @poguecriplife4376 3 года назад

    Whats the relationship between angles d and g tho??

    • @carultch
      @carultch 2 года назад +2

      I'd recommend you post timestamps, when asking questions specific to a part of the video, since letters can mean all sorts of different things depending on the context.
      I assume you are talking about the diagram at 4:17. In this diagram, angles d and h are corresponding angles that are therefore congruent. Then angles g and h are supplementary angles, telling us that they add up to 180 degrees. There is no direct relationship that we've named between angles d and g, so we have to go through a couple of steps to conclude that d and g are angles that add up to 180 degrees.

    • @rodger3352
      @rodger3352 Год назад

      @@carultch Could u please tell me what are those couple of steps to conclude that result ?
      Im trying to figure it out but I cant find any help

    • @carultch
      @carultch Год назад +1

      @@rodger3352 The OP asked how angles d and g are related in the picture at 4:17. There is no specific name for that pair of angles.
      Step 1: we relate angle d to an angle in the same group as angle g. Angle d and angle h are called corresponding angles. All you need to do is translate angle d along the diagonal line, and you see it lines up perfectly with angle h.
      Step 2: notice that angles g and h are arranged such that they add up to a straight angle. This means they are supplementary angles, which implies they add up to 180 degrees. So if we know angle h, then we also know angle g, because g = 180 deg - h.
      Putting together steps 1 and 2, we see that these steps together imply that g = 180 deg - d.

    • @rodger3352
      @rodger3352 Год назад

      @@carultch Thank you soooo much for replying !
      That was a huge help for me :))
      Hope u have a good life !!!

  • @MarcusJohnson-lm3lf
    @MarcusJohnson-lm3lf 2 месяца назад

    Pov you forgot something for the staar test

  • @praisemaaim371
    @praisemaaim371 3 года назад

    Oh man I have a exam and still don’t understand

  • @pfever
    @pfever 2 месяца назад

    So many different mames to memorize 😢

  • @Ir1sa
    @Ir1sa 3 года назад +1

    Hewo :3

  • @juharajemal8966
    @juharajemal8966 3 года назад

    My question is where they hell is the letters and numbers shit going to take you

    • @carultch
      @carultch 2 года назад

      If you are an architect or an engineer, or even a contractor who builds what the architects and engineers specify, you will want to understand the working principles behind what people design to construct our modern world. If you are a software engineer designing a graphics program on the computer, you will want to have a working knowledge of geometry to implement the user interface.

  • @melodicnuggets8045
    @melodicnuggets8045 5 лет назад +7

    Obtuse kinda sounds like obest so you can remember its big and acute sounds like something that is small and cute so u remember its small 😘