Q4. Given of length 3.9 cm, construct such that the length of is twice that of . Verify by measurement.
(Hint: Construct such that length of = length of ; then cut off such that also has the length of .)
The steps of constructions are following:
(i) Draw a line ′l′.
(ii) Construct such that length of = length of
(iii) Then cut of such that also has the length of .
(iv) Thus the length of and the length of added together make twice the length of .
By measurement we find that PQ = 7.8 cm
= 3.9 cm + 3.9 cm = =