49 OCTAGONAL ROSETTES FOLLOWING ISOCELES TRIANGLE WITH PENTAGONAL STARS AND REGULAR OCTAGONS INTERCALARY.
50 DESCRIBE CIRCUMFERENCES AS SHOWN IN PLAN, IN WHICH ARE CARRIED DIAGONALS. FROM THE CENTRE INSCRIBE A SQUARE. THE INTERSECTIONS OF THE LINES OF THE STAR COMPLETE THE FIGURE.
51 DESCRIBE CIRCUMFERENCES EQUAL AND TANGENT, AND DIVIDE INTO SIXTEEN EQUAL PARTS. BY THE ANGLES OF DIVISION DESCRIBE A PENTAGON STARRED. BY THE CENTRE OF THE SQUARE AN OCTAGON STARRED, FROM WHICH EMANATES AN OCTAGON ROSETTE. HEXAGONS REGULAR AND STARRED.