Question

Is this correct? constructing perpendicular lines

Answer 1

correct

Answer 2

this is correct than these two lines wan being the axe OX and OY

do you can specifie it ?

Answer 3

or than the horizontal line is a tangent line to every two circle

Answer 4

If you are given a line AB and a point P, you would proceed as follows:
1. Use a compass to mark off points C & D with center P. Radius is arbitrary.
2. Using the same (or different) compass radius, with centres C and D, mark off point E on the opposite side of AB, with centres,
3, Line PE is the line perpendicular to AB.