More of the Euler Characteristic. Suppose that the base of a pyramid is an n-gon.

Write an expression in terms of n for

38) its number of vertices, V.
39) its number of faces, F.
40) its number of edges, E.

The Euler characteristic is V + F - E.

41) What can you conclude from your expressions for exercises 38 through 40 about the Euler characteristic for pyramids?

The dot plot below shows the number of toys 21 shops sold in an hour: dot plot labeled number of toys sold shows 6 dots over 0, 4 dots over 1, 3 dots over 2, 3 dots over 3, 2 dot over 4 and 3 dots over 9 is the median or the mean a better center for this data and why? median; because the data is not symmetric and there are outliers median; because the data is symmetric and there are no outliers mean; because the data is symmetric and there are no outliers mean; because the data is skewed and there are outliers