Construct an angle of `45^(@)`, using ruler and compasses only.

Explanation

STEPS OF CONSTRUCTION
(i) Construct `angleAOB=90^(@)`, as explained in Example 7.
(ii) Draw the bisector OC of `angleAOB`. Then, clearly, `angleAOC=45^(@)`.
Hence, `angleAOC` is the required angle of measure `45^(@)`