Question

Construct an angle of 90o

without using protractor. Justify the steps of the construction​

Answer 1

Answer:

Place the compass on the vertex of the angle (point B). Draw an arc across each arm of the angle.

Place the compass on the point where one arc crosses an arm and draw an arc inside the angle. ...

Use a ruler to join the vertex to the point where the arcs intersect (D).

Answer 2

Answer:

1. First draw a ray OA with initial point O.

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

3. Taking B as centre and with the same radius as before, draw an arc intersecting the previous arc, say at a point C.