Find the correct order for constructing an incircle for triangle △ABC:
1.Draw a perpendicular from I to any side to a point D.
2.The angular bisectors intersect at the incenter I.
3.Draw the angular bisectors of ∠A and ∠B.
4.Take ID as the radius and draw a circle.
5.Construct triangle △ABC.
5-3-2-1-4
Correct order:
1.Construct triangle △ABC
2.Draw the angular bisectors of ∠A and ∠B
3.The angular bisectors intersect at the incenter I.
4.Draw a perpendicular from I to any side to a point D.
5.Take ID as the radius and draw a circle