Greek-style Pasta Salad

1 pkg. bowtie pasta (make according to package directions)
1 - 6oz. can white chunk tuna
1 cucumber, seeded and cut in small pieces
1/2 red onion, chopped
1/2 pkg. grape tomatoes, cut in 1/2
1 sm. can sliced black olives
1 cup crumbled feta cheese (6oz.)
Dressing:
1/2 cup olive oil
1/2 cup lemon juice
1 tsp. dried oregano
1/2 tsp. dried mint, crushed
(Makes 6 servings)