Final answer:
Distance is the positive amount of space between two points on a plane that can be measured using a ruler.
Step-by-step explanation:
The positive amount of space between two points on a plane, which can be measured using a ruler without using your brain, is called Distance.
Distance is a measurement that describes the total path between starting and ending points. It is different from other options provided in the question:
- Perimeter is the measurement of the distance around a closed shape.
- Diameter is the measurement of the distance across the widest part of a circle or a sphere.
- Radius is the measurement of the distance from the center of a circle or a sphere to any point on its edge.