Draw a five star

I have a homework to draw a star on matlab: Let the vertices of a five star be (6.5, 0),(9, 5),(14, 5.5),(10.5, 9),(12, 14), (6.5, 11.5),(2, 14),(3.5, 9),(0, 5.5),(5, 5). Draw the graph of the above vertices. Anyone have any idea

Answer 1

[KSSV]

Read about plot.

A = [ 6.5, 0
       9, 5,
       14, 5.5,
       10.5, 9,
       12, 14, 
       6.5, 11.5,
       2, 14,
       3.5, 9,
       0, 5.5
       ,5, 5
       6.5, 0 ] ;          
plot(A(:,1),A(:,2))

If you want color use:

patch(A(:,1),A(:,2),'r')

[Tien Dat Pham]

Can you explain me the line:

plot(A(:,1),A(:,2))

Thank you!

[KSSV]

A(:,1) picks the entire first column, this is x data.

A(:,2) picks the entire second column, this is y data.

Answer 2

[Nhan Huynh]

Let the vertices of a five star be (6.5,0),(9,5),(14,5.5),(10.5,9),(12,14), (6.5,11.5),(2,14),(3.5,9),(0,5.5),(5,5). Draw the graph of the above vertices and the graph of the new vertices after performing the matrix transformation T =( 0 1/2 ;1/2 0 ).Can someone help me with that, please