Pythagoras' theorem close Pythagoras ... can be used to calculate the distance between two points. The line between points X and Y is a line segment. A line segment is a part of a line which ...

The line segment RS is labelled \(c\). Substitute the values of a, b and c into Pythagoras’ theorem to give 2² + 4² = \(c\)². 4 + 16 = 20 To find the value of \(c\), calculate the square root ...