Steps for drawing heptagons using geometric sketchpad

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1. Draw an ordinary heptagon

Click on the geometric drawing board, select the [Polygon Tool] in the toolbox on the left, click once on any point on the drawing board to form a closed figure, and the picture is obtained of heptagon. Use the polygon tool to draw. Remember that the last step of drawing is to return to the original point and click once to end the drawing.

2. Draw a regular heptagon

Draw a circle O in the blank area of ​​the drawing board and pick a point A on the circle. Double-click circle O as the center of rotation.

Create new parameter n=7 and calculate 360°/n (note that the unit [degree] must be used at this time).

Select point A, click the menu [Transform] - [Rotate], a rotation dialog box will appear, click the calculation result '360°/n' as the mark angle, and get B point; connect line segment AB.

Select point A and parameter n in turn, hold down the [Shift] key, click [Transform] - [Depth Iteration], the iteration dialog box will appear, click point B As an initial impression, a complete regular heptagon is displayed on the screen. Press the [Iterate] button to complete the operation.

Hide unnecessary objects and get a regular heptagon. Select the circle, center O and points on the circle, and press the shortcut key [Ctrl H] to hide them.

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