[cal828]

R8

$2 tri 3,5//3,5//1,2,4,7,8,9=$24

$3 tri 5//3,9//1,2,3,4,7,8,9=$36

$5 tri 3,5//3,5,9//3,5,9=$20

$5 tri 3,5,9//3,5//3,5,9=$20