Question

How to make right angle with compass .

Answer 1

draw a line AB of any length
now with A as the centre and any radius draw an arc cutting AB at C
now with C as the centre and same radius cut an arc on the previous existing arc at D so d=60°
now withdrew as the centre and radius same as step 2 draw an arc at the firstly drawn arc at E so E=120°
now with D as the centre and radius more than half of DE draw an arc aboveDE
similarly withe as the centre and same radius draw an arc cutting previous arc at F
so
FAB=90°

Answer 2

Draw a horizontal line first
Then draw a semi circle on it's one end.
Then without changing the compass.
Place the tip of compass on one of end of the semi circle and cut a arc on semi circle the move ur compass on arc intersection and cut another
Both arcs shows angle of 60 then
Place ur compass on first 60° and draw a arc and then on another draw a arc
U will get a point where both arcs cut each other
Draw a line from center of the circle which is passimg through the cutting point of arcs
And u will get 90° angle