Question

constructions for 90° by using protactor but it must above 5 steps or 5

Answer 1

Follow the following step to construct 90 Degree Angle 

1). Use ruler and draw a Line segment OB of any convenient length. (as shown below) 



2). Now use compass and open it to any convenient radius. And with O as center , draw an arc which cutsline segment OB at X. (as shown below) 



3). Again use compass and opened to the same radius (as of step 2). And with X as center , draw an arc which cuts first arc at D . (as shown below) 



4). Again use compass and opened to the same radius (as of step 2). And with D as center , draw another arc which cuts first arc at C . (as shown below) 



5). Again use compass and opened to the same radius (as of step 2). And With C & D as center , draw two arc which cuts each other at E . (as shown below)



6). Join OE and extent it to A . (as shown below) 



7). Above formed angle AOB = 90 Degree. 

hope this helps