Question

draw 2√5 on number line class 9 maths
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Answer 1

Step 1: Draw a number line and mark the centre as 0.

Step 2: We won’t be considering (-1) for our purpose.

Step 3: With same length as between 0 and 1, draw a line perpendicular to point (1), such that new line has a length of 1 unit.

Step 4: Now join the point (0) and the end of new line of unity length.

Step 5: A right angled triangle is constructed.

Step 6: Now let us name the trianlge as ABC such that AB is the height (perpendicular), BC is the base of triangle and AC is the hypotenuese of the right angled triangle ABC.

Step 7: Now with AC as radius and C as the centre cut an arc on the same number line and name the point as D.

Step 8: Since AC is the radius of the arc and hence, CD will also be the radius of the arc whose length is 2–√.

I hope that it is helpful ............