Question

Locate √5 and -√5 on the number line.

Answer 1

Step – 1 : 

At zero draw a rectangle of length 2 units and breadth 1 unit.

Step – 2 :

Its diagonal OB 

Step – 3 : 

Using compass draw an arc of radius OB with centre ‘O’ which cuts the number line at D and D¹. 

Step – 4 : 

D represents √5 and D¹ represents – √5 on the number line.