Wednesday

April 16, 2014

April 16, 2014

Posted by **Cassidy** on Sunday, September 18, 2011 at 1:17pm.

- Geometry -
**Reiny**, Sunday, September 18, 2011 at 1:45pmIf the 10 points include the two endpoints,

then a line segment is identified by 2 points at a time

so the number is

C(10,2) = 45

e.g. suppose you label the points

A B C D ... J

then possible line segments are

AB

AC

AD

..

AJ

BC

BD

..

BJ

..

IJ

that is : 9+8+7+6+5+4+3+2+1 = 45

**Related Questions**

geometry - 1.in which geometry do lines no contain an infinite number of points...

chemistry - which orbitals in the molecular orbital diagram contain the lone ...

Chemistry - Do PCl5 have 3 lone pairs for each Cl? and 1 lone pair for P ??

George School - The following questions relate to the bonding in the OH-1 ion. (...

Chemistry: Electron Configuration - The following questions relate to the ...

Chemistry - # Electron Pairs # Lone Pairs Electronic Geometry Molecular Geometry...

analytical geometry - the points M(6,-8) and E(8,6) are on a circle with radius ...

geometry CA - Graph quadrilateral ABCD. Then determine the most precise name for...

GEOMETRY BETWEENNESS URGENT !! - POINTS H, I , AND J ARE THREE POINTS ON A LINE...

Math( Geometry) - All three planes in the figure provided are parallel. They are...