Same red triangle on the Manhattan map, with perpendicular lines labeled a and b, and the hypotenuse labeled c. That boils down to 1 + 1 = 2 miles traveled by taxi, just as before.

Grand Avenue runs diagonal while all the rest of the streets in Phoenix run perpendicular. Listen to this week's episode to find out why.

A square has two diagonals (lines that run from one corner to a different corner, but not between two corners on the same edge). For the four-number case, we can do 12 + 34 = 43 + 2 + 1. For the ...