clock puzzle

[puzzle]

Divide the clock’s face into three equal parts exactly with two lines. Therefore the sum of the numbers in the three equal parts should be same.

[Math]

Cut the clock into three equal parts, so that the sum of the cutted parts are same.

1+2+3+4+5+6+7+8+9+10+11+12=78

cut it in to 3 parts,

78/3 = 26

cut the clock as below.. Imagine a colco and cut it the numbers as below..

11+12+1+2 = 26
10+9+3+4 = 26
8+7+6+5 =26

26 + 26 + 26 = 78