Show how can be represented on the number line.

**Solution:**

Mark a point ‘A’ representing 2 on the number line. Now, construct AB of unit length which is perpendicular to OA.

So, we have OA = 2 and AB = 1

Using Pythagoras theorem, we can say that

Taking O as centre and OB as radius, draw an arc intersecting number line at C.

Point C represents on the number line.