#9
Draw a triangle connecting all 3 vertices.
![Draw a triangle connecting all 3 vertices.](https://stage.geogebra.org/resource/fvXhkVy2/FNQwrfR8dadoFutq/material-fvXhkVy2.png)
Construct the perpendicular bisectors if you want the circumcenter to put a circle outside the triangle. Construct the angle bisectors if you want the incenter to put a circle inside the triangle.
![Perpendicular bisector, click on the sides.
Angle bisector, click on 3 vertices with the angle you want bisected in the center.](https://stage.geogebra.org/resource/nqhSahg3/jlnXVMuWwz7KUthT/material-nqhSahg3.png)
Construct the circle.
![Construct the circle.](https://stage.geogebra.org/resource/SgrjAkUP/cVY6t4qbT2PrAppL/material-SgrjAkUP.png)