angle combination facts | Revision Server | Page 1

jade flume May 15, 2023, 5:56 AM

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Ey lads
Basically I've done a worksheet with 15 questions on and I've left the questions which I have no idea on what to do.
Please do not just tell me the answer, can you please explain how you got there?
Thanks!
These are the questions

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oop i Didnt realise it was the other way round

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<@&791435371564892232>

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Was I meant to ping maths mentors?

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We can start on this one

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Also mind the pen writings
That's what I thought I had to do

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ping me when you guys are here because imma go on Sparx Maths for a bit

mild tusk May 15, 2023, 6:17 AM

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@jade flume 360 - 156 = 204
204 / 2 = 102 so therefore the two sides of the circle inside of the triangle are 102
180 - 102 = 78
5x-1 + 7x-5 = 12x-6 (other angles in the triangle)
78 = 12x-6
84 = 12x
x = 7

jade flume May 15, 2023, 6:17 AM

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Where did you get 156 from?

mild tusk May 15, 2023, 6:17 AM

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the two 78s added together

jade flume May 15, 2023, 6:18 AM

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oh ok

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So you added them

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360-156=204

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Then you divided it by 2 because of vertically opposite angles

mild tusk May 15, 2023, 6:18 AM

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yea

jade flume May 15, 2023, 6:19 AM

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Why did you do 180-102

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Is that what the other angles in the triangle equal to

mild tusk May 15, 2023, 6:20 AM

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jade flume Is that what the other angles in the triangle equal to

yea

jade flume May 15, 2023, 6:20 AM

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In one triangle or both triangles

mild tusk May 15, 2023, 6:20 AM

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in one

jade flume May 15, 2023, 6:21 AM

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but it only shows one angle

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in the left hand side, it only shows 5x-1
On the right side, it shows 7x-5

mild tusk May 15, 2023, 6:21 AM

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the right value is equal to the top left one

jade flume May 15, 2023, 6:22 AM

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how come?

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What rule?

mild tusk May 15, 2023, 6:22 AM

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its the symmetrical angle rule thingy

jade flume May 15, 2023, 6:23 AM

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I'm not sure what that is

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is there a video to explain?

mild tusk May 15, 2023, 6:23 AM

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you could do it where there is two triangles as well

mild tusk May 15, 2023, 6:23 AM

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jade flume is there a video to explain?

probably

jade flume May 15, 2023, 6:24 AM

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lemme find it

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Are the angles alternate

mild tusk May 15, 2023, 6:24 AM

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jade flume Are the angles alternate

yea

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thats the one

jade flume May 15, 2023, 6:25 AM

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ahh thanks

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Thanks for explaining that one

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Lemme get the second one

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117 +5y-2=180 right

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Because co interior

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117+5y=182

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5y=65

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y=13

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oh wait is 186-5x Corresponding with the angle next to 4x+3

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so would it be

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186-5x+4x+3=180

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189-x=180

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X=9

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woah I've just solved that by myself

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why did I ask for help lol

mild tusk May 15, 2023, 6:31 AM

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cointerior are opposite im pretty sure

jade flume May 15, 2023, 6:31 AM

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Don't co-interior angles add up to 180?

mild tusk May 15, 2023, 6:32 AM

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i mean like the bottom left angle and the top right angle add to 180

jade flume May 15, 2023, 6:33 AM

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what??

mild tusk May 15, 2023, 6:33 AM

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idk

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what im saying

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x does =9 though

jade flume May 15, 2023, 6:34 AM

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now this question

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Would I need to extend the parallel lines

mild tusk May 15, 2023, 6:37 AM

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you might

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idk how to solve that one

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ignore my horrid handwriting

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opposites add to 180

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180-3x = 108

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180-108 = 3x
72= 3x
24 = x

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@jade flume

jade flume May 15, 2023, 6:43 AM

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hey

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Lemme read

mild tusk May 15, 2023, 6:43 AM

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oh i thought u were on sparx again

jade flume May 15, 2023, 6:44 AM

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yea I was

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just got the ping notif lol

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How does 180-3x=108

mild tusk May 15, 2023, 6:45 AM

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opposite angles in a circle add to 180

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3x + 108 = 180

jade flume May 15, 2023, 6:46 AM

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ohh I see

mild tusk May 15, 2023, 6:47 AM

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that 120 degrees at the top is just baiting u its not needed at all

jade flume May 15, 2023, 6:47 AM

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Yea that's what I was wondering about

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What's the bottom right angle in the circle

mild tusk May 15, 2023, 6:48 AM

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i mean u could use it but it would just be really messy and hard

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72

jade flume May 15, 2023, 6:48 AM

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Ohhh

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Cuz straight lines

mild tusk May 15, 2023, 6:48 AM

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yeah straight lines add to 180

jade flume May 15, 2023, 6:49 AM

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So wouldn't it be

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108+72+3x + something =360

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Wait what top left angle of circle

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180-3x?

mild tusk May 15, 2023, 6:50 AM

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i just did 180 - 3x bc the x cancels out

jade flume May 15, 2023, 6:50 AM

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oh ok

jade flume May 15, 2023, 6:52 AM

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mild tusk 180-3x = 108

And how does 180-3x=108

mild tusk May 15, 2023, 6:52 AM

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just rearranging the equation

jade flume May 15, 2023, 6:52 AM

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ohh

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oh thanks

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Imma go school then

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Safe

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Thanks for explaining so well

mild tusk May 15, 2023, 6:53 AM

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yw

jade flume May 15, 2023, 6:53 AM

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how do I close this tab?

mild tusk May 15, 2023, 6:53 AM

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hold down on the channel button and then it says unfollow

#angle combination facts