Article Introduction：1. Draw △ABC and line segment DE. Open the geometric drawing board, select the [Polygon Tool] on the left sidebar, and draw △ABC in the blank area of ​​the drawing board; select the [Line Segment Tool] on the left sidebar and draw a line segment DE on the drawing board. 2. Use the move tool to select the line segment DE, click the [Construction] menu in the upper menu bar, and select the [Point on Line Segment] command from its drop-down menu to construct a point on the line segment, recorded as F. Select points D and F in turn, click the [Construction] menu in the upper menu bar, and select the [Line Segment] command from its drop-down menu to construct the line segment DF. 3. Mark vector. Select the move tool, click D and F in sequence with the mouse, click the [Transform] menu in the upper menu bar, and select the [Mark Vector] command from its drop-down option. 4. Make the square of △ABC

2024-04-08 comment 0  1067

Article Introduction：The second definition of ellipse: Assume that the ratio of the distance between the moving point M (x, y) and the fixed point F (c, 0) and the distance from it to the fixed straight line l: x=a2/c is a constant (a>c>0) , then the trajectory of point M is an ellipse. Point F is a focus of the ellipse, and the straight line l is the directrix in the ellipse corresponding to the focus F. Constant e=c/a(0). The specific operation is as follows: To create an animation with a fixed endpoint and a trajectory animation of the midpoint of the line segment with the other endpoint moving on a fixed circle, the operation process is as follows: select a circle tool and draw a circle arbitrarily on the drawing board with the center of the circle O ;Select [Line Segment Tool], draw a line segment DC, D is the vertex, C is the moving point; select [Circle Tool] on the left sidebar, draw a circle on the drawing board with the center of the circle O; select [Line Segment Tool]

2024-06-10 comment 0  783

Article Introduction：1. First, after opening the terminal page, click the Settings option. 2. Then, find the interactive section in the Settings column. 3. Finally, click the mouse button to turn on the Automatically copy selected content to the clipboard button.

2024-06-01 comment 0  420

Article Introduction：This time I will bring you a detailed explanation of the automatic construction of rem on the mobile terminal of webpack. What are the precautions for automatic construction of rem on the mobile terminal of webpack? Here is a practical case, let's take a look.

2018-04-11 comment 0  1994

Article Introduction：1. Use the geometric sketchpad to create graphics. Open the geometric sketchpad, select the [Polygon Tool] on the left toolbar, and draw any △ABC in the blank area of ​​the sketchpad. Select the [Point Tool] to draw any two points D and E in the blank area. Select these two points and execute the "Transform" - "Mark Vector" command. Select △ABC to be translated, execute the "Transform" - "Translate" command, click the [Translate] button in the pop-up translation dialog box, and you can get the translated triangle. 2. Create a graphic rotation animation with the geometric sketchpad. Here we still use the above method. Take the drawn △ABC as an example to introduce how to rotate it 180 degrees. Mark the center of rotation. Here is an example to set point C as the center of rotation. Select [Select Arrow Tool], select point C and double-click to set it as the center of rotation.

2024-04-17 comment 0  1084

Article Introduction：1. Open the geometric sketchpad, create a new blank file, draw a △ABC in the workspace, draw another line segment DE, and draw a point F on DE. 2. Use the [Select] tool to select points D and F in order, execute the [Transform]-[Mark Vector] command, and mark a vector from D to F, which will be used as the standard for subsequent translation. 3. Use the [Select] tool to select the three sides and three vertices of △ABC, execute the [Transform] - [Translate] command, and keep the settings as shown in the figure in the pop-up dialog box. 4. The result is as shown in the figure. You can drag point F to move on DE and control ΔA′B′C′ to leave △ABC or overlap with △ABC. The production is basically completed, but some optimization work will be done next. 5. Use the [Select] tool to select points E and F in order, and execute

2024-04-17 comment 0  1116

Article Introduction：Draw a parallelogram. Open the Geometry Sketchpad, click [Customize Tools] on the sidebar - Quadrilateral - Parallelogram, and draw a parallelogram on the canvas, as shown in the figure. Select the [Move Arrow Tool] on the sidebar to select the entire parallelogram, click [Transform] on the menu bar - Translation, enter the translation distance in the dialog box that appears, click the [Translate] button, and you can see the upper and lower sides of the cuboid. The bottom surface is already formed. Use the [Line Segment Ruler Tool] to draw four edges, as shown in the final picture.

2024-04-17 comment 0  430

Article Introduction：For example, if you want to create a trajectory animation of the midpoint of a line segment with one endpoint fixed and the other endpoint moving on a fixed circle, the specific operations are as follows: Step 1: Draw the fixed circle O and the line segment DC, D is the vertex, and C is the moving point. Select the [Circle Tool] on the left sidebar. Click and drag anywhere on the artboard until the circle is the right size. The center of the circle is O; Step 2: Select the [Line Segment Tool]. Draw line segment DC, D is the vertex, and C is the moving point. As shown in the figure; Step 2 selects circle O and point C, click [Edit] - [Merge Points to Circle] on the upper menu bar, so as to ensure that point C is always on the circle when moving. Step 3: Construct the midpoint of the line segment. Select the CD segment, click [Construction] - [Midpoint] in the upper menu bar to get the midpoint of the line segment, and use the label tool to mark the midpoint.

2024-04-16 comment 0  771

Article Introduction：This article will show you how to enable or disable automatic copying of selections to the clipboard in Windows Terminal. Windows Terminal is a multi-tab terminal emulator developed by Microsoft specifically for Windows 11/10, replacing the traditional command prompt. It supports running applications such as Command Prompt, PowerShell, WSL, Azure, etc. Often when working in the terminal, users need to copy commands and output, however the terminal does not support copying selection operations by default. Keep reading this article to learn how to fix this issue. How to enable or disable automatic copying of selections to cache in Terminal? Here's how you can enable or disable automatic copying of selections to the Terminal clipboard: Open the Terminal application and click above

2024-03-24 comment 0  1125

Article Introduction：1. Prepare materials: half butterfly picture, preferably in PNG or GIF format with a transparent background. 2. Use a circle to construct a parallelogram ① Open the geometric sketchpad mathematical geometry drawing software, use the circle tool to draw a circle O, OA is its radius. ② Mark point O as the center of rotation. Rotate point A 90° around point O to get point B. Pick any point C on the circle between A and B, and select ⊙O, point C, and point B in order to construct arc CB. ③ Construct point D on arc CB and create an animation button for point D on arc CB. ④ Mark the vector OD and translate the point A to E accordingly to obtain the parallelogram OAED. 3. Drag the prepared half butterfly picture to the geometric drawing board, select it, and copy it. 4. Select the three points D, O, and E in turn and execute [Edit] → [Paste]

2024-04-17 comment 0  945

Article Introduction：Some friends reported that in the process of using Win10, they encountered the situation where the dotted box automatically draws when the mouse moves. So what should I do about the dotted box automatically drawing when the mouse moves in Win10? Here, the editor will give you a detailed introduction to the solution to automatically draw a dotted frame when moving the mouse in Win10. Friends who need it can take a look. 1. Right-click "This PC" on the desktop and select "Properties" in the option list to open it. 2. After entering the new interface, click the "Advanced System Settings" option in the left column. 3. In the window interface that opens, click the "Advanced" tab at the top, and then click the "Settings" button.

2024-04-07 comment 0  787

Article Introduction：Construct a circle. Open the geometric drawing board, select the [Circle Tool] on the left sidebar, draw a circle O on the drawing board, use the [Point Tool] to pick a point P on the circle, use the [Line Segment Tool] to draw a line segment AB, and then use Move Select the line segment with the tool, click the [Measure] menu on the upper menu bar, and select the [Length] command from its drop-down option to measure the length of line segment AB and construct circle P. Select the point P and the length of the line segment AB just measured, click the [Construction] menu in the upper menu bar, and select the [Draw a Circle with Center and Radius] command from its drop-down option. In this way, you will get the circle P and create an animation button. Select point P, click the [Edit] menu in the upper menu bar, select the [Operation Button]-[Animation] command in its drop-down option, and then click in the pop-up dialog box

2024-04-16 comment 0  523

Article Introduction：Draw points. Select the [Point Tool] in the toolbox on the left, draw two points A and B in the vertical direction, and then draw two points C and D in the same horizontal direction as point A, as shown in the figure. Paste the picture. Select two points B and C, click the [Edit] menu above, select [Paste Image] from its drop-down option, and paste the text to be displayed on these two points. Set the movement animation. Select points C and D in turn, click the [Edit] menu above, select the [Move] command in the [Operation Type Button] in its drop-down option, and set a [Move from C → D] button for [Display] For the text content, also set a [Move from C→A] button to [hide] the text content, thus creating a horizontal rightward stretching animation, as shown in the figure. No need to hide

2024-06-06 comment 0  977

Article Introduction：Construct an arc. To create an animation of points moving on an arc, you must first construct an arc. The arc is obtained based on the circle, so you still need to draw the circle in the geometry sketchpad first. Select the [Circle Tool] button on the left sidebar, click the mouse in the working area on the right, drag the mouse after determining the center of the circle, and click the mouse again after determining the size of the circle. The circle is drawn. To construct an arc from a circle, first pick two free points on the circle, select the [Point Tool] button on the left sidebar, pick two points A and B on the circle, and use the move tool to select the center of the circle in turn. , point A, point B, click the upper menu [Construction] menu bar drop-down and select the [Arc on Circle] command, thus obtaining the arc AB, and construct the free point C on the arc AB. Select left

2024-06-12 comment 0  333

Article Introduction：1. Prepare materials: half butterfly picture, preferably in PNG or GIF format with a transparent background; (Photoshop may be used) 2. Use a circle to construct a parallelogram ① Open the geometric sketchpad mathematical geometry drawing software and use the circle tool Draw a circle O, OA is its radius. ② Mark point O as the rotation center. Rotate point A 90° around point O to get point B. Pick any point C on the circle between A and B, and select ⊙O, point C, and point B in order to construct arc CB. ③ Construct point D on arc CB and create an animation button for point D on arc CB. ④ Mark the vector OD and translate the point A to E accordingly to obtain the parallelogram OAED. 3. Drag the prepared half butterfly picture to the geometric drawing board, select it, and copy it. 4. Select D, O in turn

2024-04-17 comment 0  674

Article Introduction：This article mainly introduces relevant information about JavaScript interaction (mobile terminal) based on HTML templates and JSON data. Friends in need can refer to it.

2016-05-16 comment 0  1473

Article Introduction：Create a coordinate system. Open the geometric sketchpad, click the [Draw] menu at the top, and select the [Define Coordinate System] command from the pop-up drop-down menu, so that the rectangular coordinate system is established on the sketchpad. Select [Point Tool] to draw any point A on the coordinates. Select point A, click the [Measure] menu, and select the [Coordinates] command in the pop-up drop-down menu. In this way, the coordinates of point A are measured, and the measurement results are displayed on the drawing board. . Select point A, click the [Transform] menu above, and select the [Translation] command in the pop-up drop-down menu. The moving direction and distance are determined by you, so that a new point A’ appears in the coordinate system. Select only point A’ and the coordinate measurement value of point A, hold down the Shift key, click the [Edit] menu above, and select [Combined] in the pop-up drop-down menu.

2024-04-17 comment 0  937

Article Introduction：1. Rhombus without diagonal Open the geometric sketchpad, open the left sidebar [Customize Tools] - Quadrilateral - Rhombus, click a point on the canvas to determine a vertex of the rhombus, then hold down the mouse and drag to determine the rhombus. Click the side length. Use the [Move Arrow Tool] to select the two red points above the rhombus vertices and drag them to adjust the size and direction of the rhombus. 2. Rhombus with diagonal lines. Open the left sidebar [Customize Tools] - Quadrilateral - Rhombus (including diagonal lines). Click a point on the canvas to determine a vertex of the rhombus, then hold down the mouse and drag to confirm. Click the side length of the rhombus. Use the [Move Arrow Tool] to select the two red points above the rhombus vertices and drag them to adjust the size and direction of the rhombus.

2024-04-17 comment 0  334

Article Introduction：Creating an Array Initializer from a Tuple or Variadic Template ParametersVariadic templates offer a solution to the need for automatic offset...

2024-11-02 comment 0  570

Article Introduction：Construct an arc. To create an animation of points moving on an arc, you first need to construct an arc. The arc is obtained based on the circle, so you still need to draw the circle in the geometry sketchpad first. Click the [Circle Tool] button on the toolbar, click the mouse mark in the work area on the right, drag the mouse mark after determining the center of the circle, determine the circle size, and click the mouse mark again to draw the circle. The circle tool is a very practical tool. First, you need to pick two free points on the circle, select the [Point Tool] on the left sidebar, press the button, pick two points A and B on the circle, and then use the move tool in sequence Select the center, point A, and point B, then click the [Construction] menu on the upper menu bar, select the [Circle] menu, and thus get the arc AB. Constructed on arc AB from

2024-04-16 comment 0  1056