Question

Construct an angle of 90° at the initial point of the given ray.​

Answer 1

Step-by-step explanation:

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

Taking O as centre and some radius, draw an arc of a circle, which intersects OA, say at a point B.

Taking B as centre and with the same radius as before, draw an are intersecting the previously drawn are, say at a point C.