Drawing a trapezium in matlab

Is there a quick way, apart from using vertices, to draw an isosceles trapezium given the height and the length of both parallel sides? Thank you.

Answer 1

[KSSV]

h = 1 ;  % height 
a = 2 ;  % top side
b = 4 ;   % base 

%%Frame vertices
A = [0 0] ;
B = [b 0] ;
C = [0.5*(b-a)+a h] ;
D = [0.5*(b-a) h] ;  
coor = [A ; B; C; D] ;  
patch(coor(:,1), coor(:,2),'r')

Refer here how the coordinates are formed: http://mathworld.wolfram.com/IsoscelesTrapezoid.html

[Darren Koh]

Thank you that works!

[Thomas Di Dio]

Would you be able to elaborate on the patch function? I 'm not sure what is happening there

[DGM]

See patch().

The argument list are x-coordinates, y-coordinates, and the line color.

A,B,C,D are [x y] pairs. They're simply concatenated to form the 4x2 matrix coor, from which the x,y vectors are taken in the call to patch().

[Thomas Di Dio]

thank you , I see it now.