10 0 2


193


931


Angle PO=angle between

Angle Pl=angle between

Angle SO=angle between

Angle Sl=angle between


CBED calculation.


10 0 o

10 0 2

I93

I 3


and I 9 3

and 3 9 I

and 9 I 3

and 3 9 I


Figure A