Personally, I think it is better to use geometric sketchpad, a mathematical drawing software. It can be used not only to draw geometric figures, but also to draw function images, which is suitable for algebra and geometry learning.

window

It consists of title bar, menu bar, toolbar, status bar, drawing window and recording window.

Toolbar

Toolbars are selection tools (to realize the selection and translation, rotation and scaling of objects), point drawing tools, line drawing tools, circle drawing tools, text tools and object information tools in turn. Hold down the left mouse button on the selection tool and line drawing tool button for one minute, and more types of tools will pop up; You can select objects by clicking, Shift-clicking or dragging.

relationship

The relationship between objects in the geometric sketchpad is just like the relationship between parents and children in life. If the position or size of "parents" changes, the object as "children" will also change in order to maintain the geometric relationship with parents. For example, if we do two points first and then make a line segment, then the line segment we make is the "sub" of those two points. Another example is to make a geometric object first, and then make another object based on this object with some geometric relationship (parallel, vertical, etc.). ) or transformation (rotation, translation, etc. ), then the geometry made later is the "child" in front. Those who need this software can go to the Geometer's Sketchpad official website to get the software and install it on their own computers.