60 feet
84' 10 1/4" from the apex of home to the center of second base. This is on a 60' square diamond.
Three. First base, second base and third base. Home plate is not a base.
On a 60' square diamond it is 89' 10".
60 feet
60 feet
60 feet.
It is shaped as a diamond.
60 feet
60 feet
Slow pitch softball has "closed bases," which means the runners cannot leave their base until the ball reaches the plate. But they can steal then.
A baseball field is larger and it has a pitching mound. A softball field has an extended first base to protect the fielder and runner.
Starting at home plate, all the way around in a square, each base is 90 feet apart. Then the pitcher's rubber is 60 feet 6 inches away from home plate.