Construct an angle of `45^@` at the initial point of a given ray and justify the construction.

Construct an angle of 90^@ at the initial point of a given ray and justify the construction.

Construct an angle of 90^@ at the initial point of a given ray and justify the construction.

Construct an angle of 90^(@) at the initial point of a given ray and justify the construction. Draw its angle bisector.

Construct an angle of 60^@ at the initial point of a given ray.

Construct an angle of 60^@ at the initial point of a given ray.

To construct an angle of 60^(@) at the initial point of a given ray.

Construct the following angles at the initial point of a given ray and justify the construction. 45^@

Construct the following angles at the initial point of a given ray and justify the construction. 90^@

Construct the following angles at the initial point of a given ray and justify the construction: (i) 45^0 (ii) 90^0