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# Maths past paper doubt

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1. Can someone help me with 19) c) ? I already know how to do B.
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2. (Original post by dianciesylveon)
Can someone help me with 19) c) ? I already know how to do B.
What are the properties of an isosceles triangle?
And how might you use them coupled with the provided area?

Hint

3. (Original post by Kvothe the arcane)
What are the properties of an isosceles triangle?
Have you heard of Pythagoras' theorum,?
Isosceles contain two of same angles and one different angle e.g 70 70=140
180-140= 40
Pythagoras is to find the longest length in a triangle only right Angle triangle tho.

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4. I don't know what year you're in at school but I'm in A levels and so the distance formula would help in finding the length between two points heres the formula:

Where D = Distance

(x2-x1)^2 = (4-1)^2 = 9
(y2-y1)^2 = (1-3)^2 = 4
9+4 = 13
and square root this
so the distance is Root 13
5. (Original post by DrBossBoooky)
I don't know what year you're in at school but I'm in A levels and so the distance formula would help in finding the length between two points heres the formula:

Where D = Distance

(x2-x1)^2 = (4-1)^2 = 9
(y2-y1)^2 = (1-3)^2 = 4
9+4 = 13
and square root this
so the distance is Root 13
Thank you! Im familiar with this formula but I didn't know I had to use it here iknow how to do it now
6. (Original post by dianciesylveon)
Thank you! Im familiar with this formula but I didn't know I had to use it here iknow how to do it now
Happy to help
7. (Original post by dianciesylveon)
Can someone help me with 19) c) ? I already know how to do B.
What exam board is this?
8. (Original post by dianciesylveon)
Thank you! Im familiar with this formula but I didn't know I had to use it here iknow how to do it now
You don't. You know that area of a triangle is bh/2 and should know what b and h are.

Of course that method is valid. It's just overkill and the question is trying to lead you to use the area as I suggest above.
9. (Original post by zXcodeXz)
What exam board is this?
IGCSE

And I know this method may not be the correct way to do it but I checked the mark scheme and they give both 2 marks for using this method as well.
10. (Original post by dianciesylveon)
IGCSE

And I know this method may not be the correct way to do it but I checked the mark scheme and they give both 2 marks for using this method as well.
Oh that's ok then
11. Can someone please explain how to do Q5b?

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