Page History

...

In the Create Real Circular Arc menu, the box next to Center will be yellow. That means that the vertex you select will be taken as the center of the arc. Select vertex G and click Apply. Now the box next to End Pointswill Points will be highlighted in yellow. This means that you can now select the two vertices that form the end points of the arc. Select vertex A and then vertex F. Enter AF under Label. Click Apply.

...

To create the last face we will need to make two seperate separate faces, one for the outer boundary and one for the airfoil and then subtract the airfoil from the boundary . Create semi-circular face circ1 by selecting GA, AF, FE and EG and enter circ1 for the label. Create the face for the airfoil by selecting corresponding edges. Subtract the airfoil from circ1.

Operation Toolpad > Geometry Command Button > Face Command Button
right click on the Boolean Operations Buttonand Button and select Subtract
The Face box will be highlighted yellow. Shift click to select circ1, the outer semi-circular boundary. Then select the lower box labeled Subtract Faces which will allow you to select faces to subtract from our outer boundary. Select the airfoil face and click apply.

...