Shadowing Practice: GCSE Maths - Alternate, Corresponding and Allied Angles - Parallel Lines Angle Rules (2026/27 exams) - Learn English Speaking with Video
Kies een oefenmodus
Elke modus opent een volledig scherm oefenruimte.
59 zinnen
Als zinnen te kort of te lang zijn, klik op Bewerken om ze aan te passen.
1
Thank you.
2
In this video, we're going to cover how you can use the rules of alternate angles, corresponding angles, and allied angles.
3
Importantly though, we only use these rules in one specific scenario.
4
which is where we have two parallel lines running alongside each other like this, and then another line, which we can call a transversal, cutting through them both.
5
Whenever this happens, we end up with two groups of angles.
6
One here at the bottom, and another one here at the top.
7
And there are four important points that you want to notice about these angles.
8
The first is that both groups of angles are both exactly the same.
9
For example, in this case, they both have a 120 degree, a 60 degree, another 120 degree, and another 60 degree angle.
10
The second point is that each group only contains two different angles.
11
In this case, 60 degree angles.
12
and 120 degree angles.
13
The third point is that the two different angles will always add up to 180 degrees.
14
For example here, where our angles are 60 degrees and 120 degrees, These two add up to 180 degrees.
15
And the last point is that vertically opposite angles are always the same.
16
For example, these two 60 degree angles are considered vertically opposite which is why they're both 60 degrees.
17
and likewise these two 120 degree angles are also vertically opposite.
18
Now, as long as you properly understand all of these rules, You can use this knowledge to work out unknown angles if one of them is missing.
19
For example, if we had to find this angle here, marked x.
20
we'd be able to tell that it's 60 degrees.
21
Either because it's opposite this 60 degree angle, and we know that vertically opposite angles are always equal,
22
or because we know that it has to add to this 120 degrees to make 180.
23
To help with more complicated questions though, there are three more rules that are worth memorizing.
24
The first rule is that alternate angles are the same.
25
And what I mean by alternate angles is the two angles found in the corners of a Z shape like this.
26
For example, if we look at our diagram, we can see that the Z shape is here.
27
even though it's been flipped around in this case.
28
And so it's these two 60 -degree angles that we consider alternate angles.
29
The second rule is pretty similar, but says that corresponding angles are the same.
30
and corresponding angles are these two angles that you find in an F shape.
31
For example, on our diagram, the F shape is here.
32
So these two 60 degree angles are corresponding angles.
33
The third rule is that allied angles add up to 180 degrees.
34
and allied angles are just the interior angles of a C shape.
35
So in this diagram, these two angles would add together to make 180 degrees.
36
We also sometimes call these co -interior angles, or just interior angles.
37
So just know that allied, co -interior and interior all mean the same thing here.
38
If we look on our main diagram, we can see one of these C shapes here.
39
So the allied angles would be this 60 degrees, and this is 120 degrees.
40
which indeed do add together to make 180.
41
One thing to point out with all of these rules is that you'll sometimes see them in other orientations.
42
like flip it around, in which case they'll be harder to spot.
43
But as long as they have the same combination of two parallel lines and one transversal, then the rules are going to be the same.
44
To see how it all works in practice, let's have a go at this exam question.
45
So in this question we have a pair of parallel lines
46
AB and CD and then a transversal that cuts through the two of them.
47
and we need to find the missing angles x and y Now, because of all of the different rules that we can use, there are normally multiple ways that we can do questions like this.
48
And so there's no one correct way of doing it.
49
The way I would do it though is notice that this section here is like a backwards C shape.
50
and do the 135 degrees and the x are allied or co -interior angles.
51
which means that they must add together to make 180 degrees.
52
So we now know that 135 plus x equals 180.
53
which means that x is 45 degrees.
54
And then because y is vertically opposite x, we know that y must be 45 degrees as well.
55
Anyway, that's the end of this video.
56
So like always, if you want to practice questions on any of this stuff, then head over to our platform.
57
If you want to go to this particular lesson, then click on the link down in the description below.
58
Or if you want to see our platform in general, then click on the link in the top right corner of this screen.
59
Otherwise, we'll see you next time.
App downloaden
Alles wat je nodig hebt om vloeiend te spreken
AI UitspraakScoor elke zin
IPA OefeningBeheers elk geluid
WoordenschatBouw je woordenschat op
WoordenspelLeren terwijl je speelt
Zelfde Kanaal
B14
Parts of a Microscope & How to Use a Microscope
Daily ConversationHigh School Students
C1GCSE Physics - Energy Stores, Transferring Energy & Work Done
Daily ConversationUniversity Students
C14
GCSE Physics - Speed, Velocity, Distance & Displacement | Scalar & Vector Quantities (2026/27 exams)
Cambridge Exam PrepHigh School StudentsUniversity Students
C15
KS3 Chemistry - The periodic Table
Cambridge Exam PrepHigh School StudentsUniversity Students
C11
GCSE Biology - The Lungs & Gas Exchange (2026/27 exams)
High School Students
B2GCSE Biology - Drug Development and Testing - Clinical Trials (2026/27 exams)
Daily ConversationHigh School Students
C1GCSE Biology - What are Stem Cells? Difference Between Embryonic and Adult Stem Cells
Daily ConversationUniversity Students
FOR YOU
Aanbevolen Video
B22
122 zinnen
SET Notations | Mathematics: IGCSE, GCSE & O Level (CIE/CAIE, Edexcel, AQA, OCR)
Cambridge Exam PrepHigh School StudentsUniversity Students
A21
33 zinnen
Composite Area Example 1
Daily ConversationHigh School Students
B12
10 zinnen
Bulbs Arranged in Parallel – Brightness of Bulbs
Daily ConversationHigh School Students
B12
141 zinnen
HCL Versant test Video 02
TOEIC PrepBusiness EnglishDaily Conversation
B1137 zinnen
Multiplying Fractions - The Easy Way!
American AccentHigh School StudentsUniversity Students
C11
128 zinnen
Vectors and 2D Motion: Crash Course Physics #4
Daily ConversationHigh School StudentsUniversity Students
A21
165 zinnen
a an the شرح ادوات التعريف في اللغة الانجليزية : شرح قاعدة a an the ✅
Daily ConversationHigh School Students
B238 zinnen
Extras ArcLength YouTube
American AccentHigh School StudentsUniversity Students
B21
425 zinnen
NEW- Micro Unit 1 Summary- Basic Economic Concepts
Daily ConversationHigh School StudentsUniversity Students
A214
12 zinnen
Grade 5- unit 7- lesson 2
KidsTeensDaily Conversation
A23
29 zinnen
Magnet Interactions – Poles
KidsHigh School Students
C119
50 zinnen
Grade 11: Conditional Probability
High School Students
Woordenschat en spreektips bij deze les
Deze spreekles op niveau B1 is gebaseerd op de video “GCSE Maths - Alternate, Corresponding and Allied Angles - Parallel Lines Angle Rules”. Deze woorden komen het vaakst terug: angle, degree, rule, shape, add. Deze video bevat 59 zinnen en 817 woorden om na te spreken. Het gesproken deel duurt 5:34. De spreker praat in een gelijkmatig tempo van ongeveer 147 woorden per minuut, prettig om te shadowen. 86% van de woorden hoort bij de 3.000 meest gebruikte Engelse woorden; de rest kun je beter vooraf bekijken.
Belangrijke woorden in deze video
De 11 moeilijkste woorden uit de video, met uitspraak en betekenis:
| Woord | Uitspraak | Betekenis |
|---|---|---|
| ally zelfstandig naamwoord | /ˈæl.aɪ/ | bondgenoot, bondgenote |
| vertically bijwoord | /ˈvɝ.tɪ.kəli/ | verticaal, loodrecht |
| correspond werkwoord | /ˌkoɹəˈspɑnd/ | corresponderen |
| diagram zelfstandig naamwoord | /ˈdaɪ.ə.ɡɹæm/ | diagram |
| parallel bijvoeglijk naamwoord | /ˈpæ.ɹəˌlɛl/ | evenwijdig, parallel |
| memorize werkwoord | /ˈmɛm.əˌɹaɪ̯z/ | memoriseren, uit het hoofd leren |
| backward bijvoeglijk naamwoord | /ˈbækwɚd/ | achteruit, naar achteren |
| likewise bijwoord | /ˈlaɪkˌwaɪz/ | evenzo, eveneens |
| orientation zelfstandig naamwoord | /ˌɔː.ɹi.ənˈteɪ.ʃən/ | kerkbouwrichting |
| scenario zelfstandig naamwoord | /sɪˈnɛəɹioʊ/ | scenario |
| examination zelfstandig naamwoord | /ɪɡˌzæm.ɪˈneɪ.ʃən/ | onderzoek |
Phrasal verbs die je zult horen
| Woord | Uitspraak | Betekenis |
|---|---|---|
| work out werkwoord | /ˌwɝk ˈaʊt/ | uitrekenen |
Grammatica in deze video
De structuren die de spreker het meest gebruikt, met de exacte woorden uit de video:
| Structuur | In de video |
|---|---|
| Lijdende vorm be + voltooid deelwoord — het gaat om wat er gebeurt, niet om wie het doet | are considered · been flipped · are allied |
| Toekomst met “will” will + werkwoord — een besluit, belofte of voorspelling | will always add · you'll sometimes see · they'll be |
| Verplichting: must / have to / need to zeggen dat iets nodig is | had to find · has to add · need to find |
| Present continuous am/is/are + -ing — iets dat nu of in deze periode gebeurt | is missing · are corresponding |
Uitspraak om op te letten
De spreker gebruikt 6 samentrekkingen en verkorte vormen, zoals they'll, they're, we'd. Spreek ze kort uit, zoals je ze hoort.
- De klanken “sh” en “zh”: orientation /ˌɔː.ɹi.ənˈteɪ.ʃən/, examination /ɪɡˌzæm.ɪˈneɪ.ʃən/
- Lange woorden — let op de klemtoon: vertically /ˈvɝ.tɪ.kəli/, orientation /ˌɔː.ɹi.ənˈteɪ.ʃən/, importantly /ɪmˈpɔɹ.tənt.li/, examination /ɪɡˌzæm.ɪˈneɪ.ʃən/
Zo oefen je met deze video
- Luister de hele video één keer zonder te spreken en noteer de woorden die je niet kent.
- Spreek zin voor zin na op normale snelheid en herhaal elke zin tot je ritme gelijk is aan dat van de spreker.
- Neem jezelf op en vergelijk met het origineel; let daarbij op woorden als ally, vertically, correspond.
Wat is de Shadowing-techniek?
Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.