in fig5 the base edges 18 of the panel members 10 define a square floor area as shown by the dotted line 8 in fig6 in addition the building module illustrated in fig5 and 6 includes eight 3 3 4 isosceles triangles 26 the building module illustrated in fig5 and 6 is similar to that illustrated in fig1 and 2 in that the corners of the floor area the corners of the eaves and the apex 14 are located at the same position if the panel members 12 are removed and replaced by the panel members 26 the building module illustrated in fig1 and 2 can be converted to that illustrated in fig5 and 6 accordingly the dimensional relationships discussed above with respect to the building module illustrated in fig1 and 2 also pertain to the building module illustrated in fig5 and 6 it can also be appreciated that any two of the panels 12 can be replaced by two of the panels 26 to form a hybrid module having characteristics of both of the modules shown in fig1 and 3 more particularly a building module can be formed with six of the panels 12 and two of the panels 26 with four of the panels 12 and four of the panels.