GCSE Maths - Alternate, Corresponding and Allied Angles - Parallel Lines Angle Rules

[@Cognitoedu]

If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

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Hey Cognito, you probably get comments like this all the time but I just wanted to thank you so much for your videos! A couple of months ago I was predicted a 7 in Biology for my GCSEs, which is really good, but I really wanted to try and get an 8. I started binging your Biology videos (my friend recommended you) and then had a couple of study sessions with her, in which your videos were used for reference. Anyway, long story short, we both ended up getting 9s! Honestly, I was really hoping that I'd brought my grade up to an 8, so the best part of results day for me was scanning down the list of subjects to see what I got for Biology and seeing I'd got my mark up by not one but two grades! Thank you so much (and sorry for the really long comment!)

[@Cognitoedu]

That’s brilliant! Well done for all your hard work. It’s great to hear you found the videos so helpful 🙌

[@whatanoriginalusername2847]

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Thank you. No one has ever explained this and another topic as well as u. This is really going to help me for my test tomorrow!

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[@Cognitoedu]

Glad to help 😊 and we hope so too 🤞

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Thank you 🙏Cognito for the Z, F and C thing which makes it easy to recognise what it is. You make it sooo understandable and simple. I watch your videos everyday to help me with Science and Maths.👍🏼

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i have maths exams on monday (day after tomorrow) and i literallly didnt had any good practice but by watching your videos sir now i have a little hope of passing the exam ,you cleared my concepts bettter than my school teacher . i wish you happiness and a healthy life ahead.THANKYOUSOMUCH SIR ⭐

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First and foremost I just wanted to say thank you so much for taking the time to put out free content such as this, truly you're helping a lot of people and for that, you deserve an infinite amount of thank you!!! Your explanations are perfect and easy to understand. Also, a random question as I am just curious do you think you will cover advanced maths? And how long do you think this maths playlist will take? Regardless again just wanted to say thank you.

[@Cognitoedu]

Thank you! We really appreciate your support and kind words 😊 In terms of advanced maths - at some point we hope to, but it's hard to say when we'll be able to get them completed and posted. The maths playlist though should hopefully be done in the next few months. Hope this helps 👍

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Thank you so much .....I was very tense about all these angles ..but now I am full confident about them ❤

[@loganasious2966]

Thank you so much I was finding difficulty with this subject but u have made me understand the whole thing and thx for taking your time too

[@sniper54887]

Thanks mate. Now I know how to do allied angles

[@tentothepowerof10]

This is very useful. I saw a math problem and its hard to solve now i realized what to do. Thanks!

[@samgaming2026]

Bro ur a life saver I am really trying to understand this in school but what u just explained just makes me understand it very clearly bro big thanks.

[@HowTo_Maths]

Great video! Thank you. I left it for my students to watch when I was absent. We generally call them 'co-interior' angles as opposed to 'allied' angles - so that opened up a nice discussion :)

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i bet your students considered that lesson freee

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It’s so nice that the videos are so short but very understandable.

[@nprohacker333]

This video helped me understand the angles better Thanks

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[@Cognitoedu]

Happy to help!

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Thank you so much Cognito! Your videos make me understand about angles!Tysm!

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One thing I’ve never understood is I can see is a : Z , f, and a c . In all of them, how would I know the difference and which one to use?

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Same

[@yourfav9275]

@@cinders2088 yeah, I think it depends where the angle is that’s how you know but that’s just a guess I’m still not too sure.

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[@Cognitoedu]

You are very welcome Zebu!

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Thank you so much kind sir, when I am writing my proofs I always forget what these are called lol

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Thank you so much 😊finally I understand angles

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Did it help?

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[@Cognitoedu]

Great to hear. Thank you!

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Hi Cognito! How did you know what size of angles there were? The 60 and 120, I got a bit confused, unless I need to watch a video prior to this one.

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its an example

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Thank you so much for these lovely videos! Please could you tell me how you make the animations? I tried doing it in Power Point but it doesn't work!

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[@breakkingvines760]

Apply the concept of parallel lines to show Corresponding Angles, Alternate Interior Angles, Co-interior Angles, Alternate exterior Angles for the various polygons like parallelogram, Trapezium, regular pentagon regular hexagon. Note that you can construct or edit the Polygon if necessary. (1,3,4 points are to be done in the same file)

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Thank u so much this helped me so much I was confused

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saved the day again!

[@TheHistoryGuy-1]

For anyone who is wondering, interior angles are allied (like they said)

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Thanks a bunch Cognito.

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This video has been amazing Cognito, but I was wondering if you could make a video involving set notation

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just so yk, allied angles are also called co-interior angles

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thx my maths gcse today 😢