FreeCAD/C2/Inscribe-a-Polygon/English-timed
From Script | Spoken-Tutorial
Inscribe A Polygon-English
| Time | Narration |
| 0:00 | Welcome to the tutorial on Inscribe a Polygon. |
| 0:06 | In this tutorial, we will learn to, |
| 0:09 | Inscribe a pentagon inside a circle |
| 0:13 | Format the object with wireframe or flatlines |
| 0:18 | Change color and line width |
| 0:21 | Add annotation |
| 0:23 | Set global or individual font size |
| 0:27 | Measure the length of an edge and |
| 0:31 | About View toolbar, |
| 0:33 | zoom and reset |
| 0:35 | To record this tutorial, I am using Windows 11 OS and FreeCAD version 0.21.1 |
| 0:48 | To follow this tutorial, |
| 0:50 | Learners must be familiar with the FreeCAD interface. |
| 0:55 | For pre-requisite tutorials, please visit this site. |
| 01:00 | Open FreeCAD and start a new file. |
| 01:04 | Select Draft workbench. |
| 01:07 | Make sure that Orthographic and top view are selected. |
| 01:13 | Let’s add a pentagon to this drawing. |
| 01:17 | FreeCAD inscribes a polygon inside of a circle |
| 01:22 | Equation for inscribing a pentagon of a circle is R is equal to 0.85 times A. |
| 01:31 | Where A is the length of the side of the pentagon. |
| 01:35 | And R is the radius of the circle. |
| 01:39 | Click on the Polygon tool as seen. |
| 01:41 | Notice the Sides option in combo view, Model tab. |
| 01:47 | Change it to 5, since a pentagon has 5 sides. |
| 01:52 | Move the cursor to the drawing canvas and notice the + crosshair. |
| 01:58 | Left click hold and drag to form the desired polygon. |
| 02:03 | First only the circle on which the polygon is inscribed is seen. |
| 02:10 | Notice the Radius form on the left combo view panel. |
| 02:16 | As you drag to form a larger circle, the radius in the form also changes. |
| 02:22 | I will keep the radius around 20 mm and click on the canvas. |
| 02:29 | This fixes the radius of the circle and the polygon can be seen. |
| 02:34 | To select an object click on it and notice the green outline. |
| 02:39 | The new object is also added in the combo view as polygon. |
| 02:46 | Make sure the polygon is selected in the combo view. |
| 02:51 | Place the cursor on the edge of the panel as seen. |
| 02:55 | Click and drag to resize the panel. |
| 02:59 | Properties of the object can be changed using the Model tab. |
| 03:04 | For the first option of the bounding box, choose true. |
| 03:10 | Notice that a bounding box for the object is displayed. |
| 03:16 | This allows us to encompass the area of selected objects in the canvas. |
| 03:23 | We can also toggle this on or off from the view toolbar on the top menu. |
| 03:30 | Scroll down to object style. |
| 03:33 | Click on the pull down menu for Display mode as seen here. |
| 03:38 | Wireframe shows only the edges of the object. |
| 03:44 | I will choose Flat lines now. |
| 03:48 | This will enable us to draw a color shaded or color filled object. |
| 03:54 | Scroll down and click on the form for line color. |
| 03:58 | A Select color dialog box appears. |
| 04:03 | Some of you will have to click again for the dialog box to open. |
| 04:08 | I will choose red and click on OK. |
| 04:12 | When the object is selected, the outline is in green color. |
| 04:18 | Hence the change will not be visible at this point. |
| 04:23 | Scroll down and change the line width to 8. |
| 04:28 | Scroll down to the Shape color. |
| 04:30 | Click on the form and open the Select color option. |
| 04:36 | If the object has multiple faces, we can color the various faces differently. |
| 04:43 | I will choose an orange color and click on OK. |
| 04:48 | Notice that we can also change the transparency of the object here. |
| 04:54 | Now, pause the video, and draw a circle partially overlapping the pentagon. |
| 05:01 | Use flat lines for display mode and fill it with a color of your choice. |
| 05:07 | Then change the transparency level and notice the changes. |
| 05:13 | The color changes will be visible only when the object is not highlighted. |
| 05:19 | Next, let’s measure the distance of the side of the pentagon. |
| 05:23 | First click to select the edge of your choice. |
| 05:28 | Next, click on the Dimension tool in the Draft Annotation tools. |
| 05:34 | A line parallel to the selected line appears on the canvas. |
| 05:39 | Place it a bit away where you want the annotation to be placed. |
| 05:44 | Left click to notice the measured line and annotation. |
| 05:50 | For some of you the font size may be very small and not visible. |
| 05:56 | We can format the annotation globally or individually. |
| 06:01 | In the combo view, model tab, select the dimension label. |
| 06:06 | Scroll down to the graphics section and line color. |
| 06:10 | Click once or twice depending on your system to open the select color dialog. |
| 06:18 | Choose red and click on OK. |
| 06:22 | Then, scroll to the text section in the panel below. |
| 06:27 | Go to the font size section and change it to 5 mm. |
| 06:32 | Now the text size changes. |
| 06:35 | To change the default font setting, go to Edit, Preferences. |
| 06:42 | Choose the Draft tab on the left. |
| 06:45 | Then choose the Text and dimensions on top. |
| 06:50 | Set the desired parameters here for global setting. |
| 06:54 | The changes will apply only to the annotations that you will add later on. |
| 07:00 | For now I will click on Cancel as I do not want to change them. |
| 07:06 | Let us measure the distance between two user chosen points. |
| 07:11 | First click on the measure distance tool on the View toolbar. |
| 07:16 | The report view window prompts the user to pick the first point. |
| 07:21 | Click on your desired first point. |
| 07:25 | I will choose one of the vertex of the pentagon. |
| 07:28 | Then I will click on another vertex. |
| 07:31 | Notice the distance between them is now shown on the canvas. |
| 07:37 | Delete the measurements using the combo view, model tab. |
| 07:42 | Select the object and delete it. |
| 07:45 | You may want to readjust the zoom level at any point. |
| 07:50 | Use the View toolbar options as seen to fit all objects or the selection. |
| 07:57 | Many of these are also available as context menus. |
| 08:02 | Right click on the canvas with the selected object to access them. |
| 08:07 | Users must practice to get familiarity with the various tools. |
| 08:13 | Save your work if desired. |
| 08:16 | Use File, Exit to close FreeCAD. |
| 08:20 | Now let's summarize. |
| 08:22 | In this tutorial, we, |
| 08:24 | Inscribed a pentagon |
| 08:27 | Formatted color and line properties |
| 08:30 | Added Annotation |
| 08:32 | Formatted the text properties |
| 08:35 | and Measured distance between two points |
| 08:40 | For assignment activity, please do the following. |
| 08:44 | Draw a rectangle |
| 08:47 | Draw a hexagon with A =25 mm. |
| 08:51 | Hint: For hexagon, A = r to inscribe on a circle. |
| 08:56 | Practice to draw and format the properties of objects. |
| 09:01 | Hint: You may also use the parameters in combo view window to modify. |
| 09:07 | This video summarises the Spoken Tutorial Project . |
| 09:12 | Please download and watch it. |
| 09:15 | The Spoken Tutorial Project team, conducts workshops and gives certificates. |
| 09:21 | Please write to us. |
| 09:24 | Please post your timed queries in this forum. |
| 09:28 | The Spoken Tutorial Project was established by the Ministry of Education, Government of India. |
| 09:36 | Thank you for joining. |
