3:4:5 Triangle 
A triangle with sides of a specific ratio of 3 units to 4 units to 5 units produces a right-angled triangle. This triangle is used to start setting out any sports pitch which has right angles within it.
3:4:5 Triangle
A triangle with sides of a specific ratio of 3 units to 4 units to 5 units produces a right-angled triangle. This triangle is used to start setting out any sports pitch which has right angles within it.