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#1 2012-09-08 19:03:01
- Agnishom
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A few simple proofs about Triangles
Let there be a triangle ABC and O a point inside it.
Now, how can I prove that:
1.
2.
Last edited by Agnishom (2012-09-08 19:04:17)
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#3 2012-09-08 22:15:42
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Re: A few simple proofs about Triangles
I did 2.
Adding all those,
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#5 2012-09-08 22:37:29
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Re: A few simple proofs about Triangles
I remember doing it at the 7th Grade, but what about 1.?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#7 2012-09-09 01:55:11
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Re: A few simple proofs about Triangles
noemi wrote:
Hint for 1.:
OA+OB<CA+CB
Why?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#8 2012-09-09 01:56:12
- Agnishom
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Re: A few simple proofs about Triangles
Please somebody help me!
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#10 2012-09-09 11:59:03
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Re: A few simple proofs about Triangles
Hmmmmmm..................
That set of problem had another problem which I shall be posting in a new thread
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65