represent √ 5 on a number line
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draw a line bigger than 2 cm
mark 0 to 2
draw a straight vertical line of 1 unit at 90°
connect the 0 and vertical line
we will get right angled triangle
take protector place the on 0 and place the pencil on top of vertical line
Draw a arch
you will get √5
phythogarus therom
a²+b² = c²
2²+1² = c²
4+1. = c²
5. = c²
√5. = c
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