A triangle with AB as its side has three lines from A and three lines from B except AB, which can form 3×3=9 triangles;

Triangle with vertex other than AB: 2 lines from A and 1 line from B except AB; Or take 1 from three lines of A and 2 from three lines of B to form a triangle with 3×3×2= 18; The triangle formed by CF and two of the four lines from A (or from B) is 6+6= 12: subtotal 18+ 12=30.

Triangles with vertices other than a or b are: two triangles in which Ca and CF are cut by BG and BH; CB and CF are two triangles cut by AD and AE; ② triangle surrounded by CF, AE and BG or BH; 1 Triangle surrounded by CF, AD and BG: 7 Subtotal:

***9+30+7=46.

Note: the scores of AD, CF and BH are * * *.