


Step 1 Construct two arcs with common endpoints and form a crescent shape.
Step 2 Construct the points of the two arcs respectively. Use the [Move Arrow Tool] to select the two arcs respectively, click the [Construction] menu in the upper menu bar, and select [On Arc] in its drop-down menu. Point] command,
In this way, points A and B are constructed on two arcs respectively. The specific effect is as shown in the figure.
Step 3 Connect points AB to form a line segment and trace the line segment. Select the [Line Segment Ruler Tool] to connect points A and B to obtain line segment AB. Select line segment AB, click the [Display] menu above, and select the [Trace Line Segment] command from its drop-down menu, as shown in the figure below.
Note: If it is a concave curve, directly set [Tracking Line Segment], and then manually [Fill] to prevent the line segment from filling outside the graph; if it is a convex curve, you can first Set the endpoints to animation, and then perform automatic filling in [Tracing Line Segments] to save effort.
Step 4 Select [Move Arrow Tool], use the mouse to select the endpoint of the line segment and drag the selected line segment back and forth. Drag a few times to complete [Fill]. Be careful to adjust the position of the endpoints so that the line segment does not run outside the crescent diagram.
Step 5 Hide the unnecessary parts to complete the production. You can also set different colors as needed. Select line segment AB, right-click and select [Color] to modify the fill color.
The above is the detailed content of Detailed steps for filling the crescent shape with color in Geometric Sketchpad. For more information, please follow other related articles on the PHP Chinese website!

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