How do geometric artboards construct slash shadows

Many maths teachers make their courses more lively and interesting, so that students receive more knowledge. At this time, we need to use geometric drawing board to make all kinds of graphics courseware and give the students a demonstration. When you construct a drawing in a geometry artboard, you sometimes need to hatch the shape to highlight it, so how does the geometry artboard construct a slash shadow? Detailed steps are described in the following tutorial on the geometry artboard .

The steps are as follows:

1. Using the Polygon Interior tool (the second one without a line in the Polygon tool) constructs a polygon interior. Select Polygon Interior, select "Construct"--"point on Boundary", get point A, select Polygon Press "Ctrl+h" to hide inside polygon.

 
using polygon interior tools to construct point A on the inner and boundary of polygons

2, double-click any vertex, select Point A, select "Zoom"--"fixed ratio", set to 1:1 to zoom, get point B. Point a coincides with point B at this point.

 
Select a to zoom in and out to get B points coincident with point a

3, use the mouse to select the two points (note here do not use the mouse to click, with drag (the mouse will be placed in the blank to pull the area to select, if you choose the extra items, click to select and Cancel) to choose, or you can always select one of them), choose "Construction"-"trajectory" to get a polygon perimeter.

 
construct the trajectory of the AB point to get the boundary of the quadrilateral

4. Connect the leftmost and rightmost points of the polygon to get the line segment, using the Point tool to take a point C on the segment.

 
joins the leftmost and rightmost points of the quadrilateral and constructs the point C on the segment

5, use the line segment tool to draw a line segment in the space (to determine the direction of the slash shadow), select the point C and this excerpt, select "Construct"-"parallel". Parallel lines with the two intersections of the polygon are E, F, using the Segment tool to construct the segment EF, select the line segment right-click to select "Thin", "dashed".

 
constructing parallel lines of line and over C points

6. Select the segment EF and point C, select "Construct"-"track", right-Select the track, select "Properties"-"drawing", and change "sample Quantity" to 50-100. Hides the extra segments and points.

 
Select the segment EF and dot C construct track and modify the "sample Quantity" in the attribute

The above content introduces to you the method of constructing the diagonal shadow of the geometry board, which can see the magic of the geometric artboard trajectory function. The trajectory method can be used to construct many graphs, such as hyperbola.

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How do geometric artboards construct slash shadows