Sunday

December 21, 2014

December 21, 2014

Posted by **please help** on Monday, January 14, 2013 at 8:18pm.

- geometry -
**Allyson**, Monday, January 14, 2013 at 8:20pmDraw a circle, form as many triangles as you can, and count.

- geometry -
**please help**, Monday, January 14, 2013 at 8:23pmok i tried that that its hard why dont u try and tellme the answer ?

- geometry -
**Reiny**, Monday, January 14, 2013 at 8:35pmYou have 6 points on a circle.

It is not possible to have 3 of them forming a straight line (not a triangle) so the question becomes how many choices are there of 3 elements form 6

or C(6,3) = 6!/(3!3!) = 20

**Answer this Question**

**Related Questions**

math - There are nine points on a piece of paper. No three of the points are ...

Math: Combinations - There are 20 points all in one straight line and 15 others ...

math- algebra- help please! - 12 points lie on a circumference of a circle how ...

analytic geometry/graphing problem - The vertices of a triangle are the points ...

math - the number of noncollinear points needed to determine a circle Two. The ...

7th Grade Geometry - A Rectangle with vertices A B C AND D. The triangle is ...

Geometry - Let A be a convex 61− gon. We then place n points {x i} n i=1 ...

math - suppose n points are in space, no three are collinear and no four or are ...

Math Geometry - A cube has 8 vertices. For each pair of distinct vertices, we ...

Geometry - Plese show how it is possible for two triangles to intersect in one ...