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#1 2011-04-28 14:17:05
- reallylongnickname
- Member
- Registered: 2011-03-30
- Posts: 50
Area
An isoscelese triangle plus a equilateral triangle come together to form one triangle. I'm hoping someone could explain the breakdown especially in lines 2 and 3 with the base times height thing going on.
The original problem askes to determine the exact area of triangle.
Last edited by reallylongnickname (2011-04-28 14:20:43)
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#2 2011-04-28 16:29:54
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Area
Hi
An isoscelese triangle plus a equilateral triangle come together to form one triangle.
I am having trouble visualizing that. They can only meet at one side. that means each one loses a side. We should end up with a four sided object. That of course is not a triangle.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3 2011-04-29 15:20:32
- soroban
- Member
- Registered: 2007-03-09
- Posts: 452
Re: Area
. . . .
. . . .
*
*60°*
* * 1
* *
* *
1 * 60° *
* * 120° * 1
* * *
* * *
*60°* 30° 30° *
* * * * * * * * * * *
_
√3.
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#4 2011-04-29 15:49:18
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Area
Hi soroban;
I did not see that.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#5 2011-04-29 16:25:24
- reallylongnickname
- Member
- Registered: 2011-03-30
- Posts: 50
Re: Area
Here is the triangle:
I spent a couple of hours drawing it on whiteboard and it wont upload.
Last edited by reallylongnickname (2011-04-29 16:37:16)
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#6 2011-04-29 18:21:17
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Area
What size is the file?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#7 2011-04-30 00:51:59
- reallylongnickname
- Member
- Registered: 2011-03-30
- Posts: 50
Re: Area
Here u go this works. I used photobucket and ms paint.
Last edited by reallylongnickname (2011-04-30 00:54:21)
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#8 2011-04-30 01:16:47
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Area
Hi;
For triangle PQR
For triangle PRS
Line segment ( base of PRS ) is:
The area of triangle PRS is:
Add both areas up.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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