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# Maths year 11 Watch

1. (Original post by z_o_e)
My teacher did that on the board and I copied it :/

I'll get a few past paper questions

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Perpendicular means that the two lines intersect at a 90 degree angle. - I attempted to make what I did as clear as possible, but it's probably best to watch some videos on it.

2. (Original post by 34908seikj)
Perpendicular means that the two lines intersect at a 90 degree angle. - I attempted to make what I did as clear as possible, but it's probably best to watch some videos on it.

Got a bit of it!!

So the point they give me I put my compass of that and draw a semi circle. And follow underneath the semicircle and that gives 2 semi circles... and then down the point and between both circles draw a straight line..

So ill do an example..

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3. (Original post by z_o_e)
Got a bit of it!!

So the point they give me I put my compass of that and draw a semi circle. And follow underneath the semicircle and that gives 2 semi circles... and then down the point and between both circles draw a straight line..

So ill do an example..

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That looks quite wrong, your construction lines should resemble mine.

Watch this:

It pretty much covers everything you'll need for constructions and loci.
4. (Original post by 34908seikj)
That looks quite wrong, your construction lines should resemble mine.

Watch this:

It pretty much covers everything you'll need for constructions and loci.
Working on it

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5. (Original post by z_o_e)
Working on it

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Yup, they're right. No need to draw that other circle on the second one though.
6. (Original post by 34908seikj)
Yup, they're right. No need to draw that other circle on the second one though.
Ergh I mess up when it comes to holding a compass eegh

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7. (Original post by 34908seikj)
Yup, they're right. No need to draw that other circle on the second one though.
I kind of know how to do arcs now but what does this mean?

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8. (Original post by z_o_e)
I kind of know how to do arcs now but what does this mean?

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You need to make your compass the size of the sides. Draw the base first, then the sides.
9. (Original post by 34908seikj)
You need to make your compass the size of the sides. Draw the base first, then the sides.
I give up. I can't do this.

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10. (Original post by z_o_e)
I give up. I can't do this.

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No, I respectfully stop you from giving up.

http://imgur.com/a/jt71t

The photos and steps might not be in the right order - sorry was in a rush, will be back in an hour.
11. (Original post by 34908seikj)
No, I respectfully stop you from giving up.

http://imgur.com/a/jt71t

The photos and steps might not be in the right order - sorry was in a rush, will be back in an hour.
why you draw a line which is 6.7?

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12. (Original post by z_o_e)
why you draw a line which is 6.7?

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The base is 6.3 - i misread it as 6.7 sorry.
13. (Original post by 34908seikj)
The base is 6.3 - i misread it as 6.7 sorry.
I got how to do this question!!

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14. (Original post by z_o_e)
I got how to do this question!!

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Nice, so you understand how to construct triangles using loci now?
15. (Original post by 34908seikj)
Nice, so you understand how to construct triangles using loci now?
Going to do a few examples then ill find out
Maths isn't that bad. I just never spent that much time working on it lol

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16. (Original post by 34908seikj)
Nice, so you understand how to construct triangles using loci now?
I got this ;/

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17. (Original post by z_o_e)
I got this ;/

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No compass needed!

18. (Original post by 34908seikj)
No compass needed!

Oh

The second question I got this

I checked the answer page my angle A was exactly 64 D
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19. (Original post by z_o_e)
Oh

The second question I got this

I checked the answer page my angle A was exactly 64 D
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Yeah, nice. Just remember if they give you two sides and an angle or two angles and a side, you don't need to use a compass to construct the triangle!
20. (Original post by 34908seikj)
Yeah, nice. Just remember if they give you two sides and an angle or two angles and a side, you don't need to use a compass to construct the triangle!
Can I still use it incase?

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Updated: December 10, 2016
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