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 Post subject: Find triangle side lengthsPosted: Sat Feb 16, 2013 3:51 pm

Joined: Sun Jan 20, 2013 10:22 am
Posts: 73
What is answer for this. Thanks for help.

Nina has some sticks of different lengths.
She can lay the sticks end to end to make
triangles, like this:

Nina chooses sticks with lengths
2cm; 3cm; 5cm; 6cm; 8cm;
Which of these sets of three sticks can Nina
use to make a triangle?
A 2cm, 3cm, 5cm
B 2cm, 3cm. 6cm
c 2cm, 3cm, 8cm
D 3cm,5cm,6cm
E 3cm, 5cm, 8cm

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 Post subject: Re: Find triangle side lengthsPosted: Sat Feb 16, 2013 3:52 pm

Joined: Fri Sep 15, 2006 8:51 am
Posts: 8113
what sort of triangle are you trying to make?

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 Post subject: Re: Find triangle side lengthsPosted: Sat Feb 16, 2013 4:06 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11940
Try drawing them and thinking whther they COULD make a triangle.

For example no-one can make a triangle with sticks 5cm, 10cm and 17cm because .... think about it!

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 Post subject: Re: Find triangle side lengthsPosted: Sat Feb 16, 2013 4:56 pm

Joined: Sun Jan 20, 2013 10:22 am
Posts: 73
https://www.dropbox.com/s/mwbe6lr9zgvil ... 5%2022.jpg

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 Post subject: Re: Find triangle side lengthsPosted: Sat Feb 16, 2013 5:00 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11940
I know the answer but you need to think about how you know that some of these options just won't work!

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 Post subject: Re: Find triangle side lengthsPosted: Sat Feb 16, 2013 5:07 pm

Joined: Mon Aug 22, 2011 8:20 pm
Posts: 1706
Location: Warwickshire

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