How to Drywall an Odd Angle Corner

Hook a tape measure to the wall stud in the corner. Measure from the wall stud to the last piece of installed drywall on the wall. Transfer this to a piece of drywall, once near the top edge and again near the bottom edge.

Connect the two marks with a long carpenter's square. Make a cut down the drywall's face with a utility knife, using the carpenter's square as a straight edge. Bend the drywall along the line you cut, then cut through the paper backing.

Hook the tape measure on the corner wall stud once again and take the measurement along the corner's other side, from the corner to the last installed piece of drywall.

Mark this measurement onto another piece of drywall and cut it the same way you cut the first piece. Test fit the two pieces on the corner. There should be a slight V-shaped gap at the corner, between the two pieces of drywall's edges.

Set one piece of drywall aside. Hold the other piece in position on the wall. Drive drywall screws through the drywall and into each wall stud it intersects. Use four drywall screws for each stud. Secure the second piece to the wall in the same way.

Continue to install drywall next to the corner, working your way up to the ceiling. Once the entire corner has been drywalled, put a flexible corner bead over the corner. Drive drywall screws through the corner bead and into the drywall to hold it in place.