11. FORMWORK

CHAPTER 11 'FORMWORK' 33 Circle - Center, Beam Graphics/ Center, Data/ Three Points: Draw circles by giving their centre and radius (graphically or by typing its value) or three points. The drawing process is similar to that of the arcs described in the previous paragraph. 3.2 Other Schemes: Ring: When inserting a Ring, a circle is drawn (with the geometric elements we define) filled with active color. The method of use is similar to that of drawing circles. Polygon: With this command you can draw polygons inscribed or outlined on an existing circle or arc. The drawing procedure for both cases is the same. 1. After activating the command, you select with the mouse the circle on which to draw an inscribed or circumscribed polygon. 2. With the help of the semi-line with the centre of the circle as a vertex which follows the mouse pointer, you define the position of the vertex of the polygon which is determined as follows: i. For an inscribed polygon it will be the point of intersection of the circle and the semilinear line to be defined, or its extension. ii. For a circumscribed polygon the point will be on the half-line and outside the existing circle. 3. Immediately after defining the first vertex of the polygon, a dialog box opens where you type in the number of vertices of the polygon. With the dialogue box is closed and the polygon is drawn. Rectangular: Horizontal: Draw a rectangular parallelogram with sides parallel to the two principal axes, using the mouse to define the vertices of one of its two diagonals.