vertices I think
the vertext
21
(180 - 36) / 2 = 72
In two dimensions 6 triangles meet at a vertex. In 3-dimensions any number of triangles (greater than 2) can meet at a vertext - a pyramid with the base in the shape of an n-gon will have n triangles meeting at its apex.
In geometry, a vertex (plural vertices) is a special kind of point that describes the corners or intersections of geometric shapes.A vertex (plural: vertices) is a point where two or more straight lines meet.It is a Corner.This tetrahedron has 4 vertices.And this pentagon has 5 vertices
You should use a special device for measuring angles - a protractor. With a ruler, it is much more complicated, but still possible: you can mark two points on the angle, one on each side; measure the distance from the vertext of the angle to those points; measure the distance between the points; then use the Law of Cosines to calculate the angle.
Suppose all the pentagon have two adjacent angles of 45 degrees, and three right angles. Create a line of pentagons with their bases aligned and their "odd" vertext facing upwards. Next create a second line of pentagons, inverted so as to meet the first line apex-to-apex. The gaps between these will be rectangular (square, in fact). It is thus possible to obtain a tessellation. No tesselation is possible with regular pentagons and rectangles.
There are countless iPod games, and therefore too many to find all of them or fit into a WikiAnswers question. but it comes with 3 games! maze,some card game like solitare,and vertext!but yours might be different! i have the 5th generation ipod nano!