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March 4, 2015

March 4, 2015

Posted by **BIAO** on Monday, September 5, 2011 at 5:47am.

- MATH -
**Dr Russ**, Monday, September 5, 2011 at 7:02amPlease do not type in capitals it is hard to read and is considered to be shouting.

If the points are co-linear then there are three possible arrangements

1. ABC

2. ACB

3. BAC

if AB=7 cm and BC = 17 cm then arrangement 2 is not possible because 7cm is not greater than 13 cm

In arrangement 1

A 7 cm B 13 cm C

so AC= 20 cm

In arrangement 3

B 7 cm A 7 ??x?? C and BC = 13 cm

so AC = 6 cm

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