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Chapter 6: Creating Drawings with Draw

Drawing Sectors and Segments

The Ellipse floating toolbar contains several icons for drawing sectors and segments. Sectors

look like “perfectly cut pieces of pie”. Segments look like halves of a pie.

Drawing sectors of an ellipse or circle requires multiple steps, though the process functions

intuitively:

1. Open the Ellipse floating toolbar and click on the Circle Pie icon. The pointer

changes to a cross-hair symbol accompanied by a small sector symbol.

2. Use the mouse to drag open the shape of a circle. The outline of a circle follows the

movement of the mouse.

Note: The first click defines the first corner of the delimiting rectangle which surrounds the circle. The delimiting

rectangle will later be obvious from the eight handles that appear when selecting the circle. To draw the circle such

that the first click defines the centre, press the

Alt

key while dragging the mouse.

3. Release the mouse button when the circle has reached the desired size. Now notice that a

radius which follows the movement of the mouse is drawn in the circle.

4. Position the radius at the point where it is wanted so as to place one boundary of the sector

and click once.

5. Now when moving the mouse, notice that the first radius is set and a second radius follows

the movement of the mouse. Click again to complete the circle pie.

Drawing ellipses is done in a similar fashion. The

dimensions of the delimiting rectangle, formed when first

drawing the shape, determines the dimensions of the ellipse.

When drawing a segment, proceed in exactly the same

manner as described above for sectors. The only difference

is that in the last step no second radius follows the

movement of the mouse, but rather a secant (straight line)

cuts through the circle.

The other icons in the Ellipse floating toolbar can be used to draw ellipses and arcs. This

process also functions as described above although, only the perimeter of the ellipse or the

circle is drawn.

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