How many triangles can you find in the picture?

Old Farmer Palmer has a herd of cows, but he always seems to forget how many animals there are. When he counts them he just makes sure he can see 6 cows from each window of his house.

One night, however, Russell the Rustler took away half of the herd. Farmer Palmer didn’t notice for ages because the next morning he could still see 6 cows from each window. How was it done?
Riddle AnswerYou are to make one cut (or draw one line) – of course it needn’t be straight – that will divide the following shape into two identical parts.
Riddle Answer
A man wishes to reach the island in the middle of an ornamental lake without getting wet. The island is 20 feet from each edge of the pond (see diagram) and he has two planks each 19 feet long. How does he get across?
Riddle Answer