An "angle" is the degree of space between two converging lines at the point where they meet, like point A in the diagram. It is unwise to plan the defense of a position without a knowledge of angles.
A. Angle of the centre. B. Angle of the polygon. C. Angle of the base. D. Angle of the flank. E. Angle of the flank of the curtain. F. Angle of the shoulder [Epaule]. G. Angle of flank or defense [lit. flanking Angle]. H. Salient angle [lit. diminutive angle]. The Suit of Spades ... [Available 4/98] The Suit of Clubs ..... [Available 8/98] The Suit of Hearts .... [Available 12/98]