What is meant by a planar figure

A planar graph is a figure represented on a plane by graphical elements such as line segments, points, and surfaces, also known as plane geometry. A planar graph is a fundamental concept in mathematics and is widely used in fields such as geometry, topology, and computer graphics.

A planar figure is characterized by the fact that all line segments, points, and surfaces are in the same plane, and no element extends beyond this plane. Therefore, plane drawings have the advantages of being visual, easy to draw, and easy to understand. The properties and theorems of plane diagrams are also important in the subject of mathematics.

Steps of Planar Diagrams

To draw a planar diagram, you need to follow the following steps:

1. Prepare Drawing Tools: To draw a planar diagram, you need to use tools such as ruler, compass, protractor, and so on, and you can either choose the traditional hand-drawing tools, or you can also use the computer drawing software.

2. Determine the basic elements of the plan: the basic elements of the plan include points, line segments, corners, surfaces, etc., according to the actual need to determine which elements to draw.

3. Drawing points and line segments: according to the requirements of the plan, use a ruler and compass to draw points and line segments, and mark the corresponding names and lengths.

4. Plotting Angles and Surfaces: Based on the points and line segments that have been plotted, use a protractor to plot angles and connect the angles with line segments to form surfaces.

5. Checking and correcting: After the drawing is completed, the plan needs to be checked and corrected to ensure the accuracy and completeness of the graphic.

Applications of planar graphs

Planar graphs are the basic concepts in mathematical disciplines, and are widely used in the fields of geometry, topology, and computer graphics. There are also many applications of floor plans in real life and work, such as:

1. Architectural design: architects need to use floor plans to plan the structure of the building, spatial layout and so on.

2. Map making: Map makers need to use floor plans to draw maps and label information such as geographic location and terrain.

3. Construction: Engineers need to use floor plans to plan construction programs and determine the progress and workload of the project.

4. Mechanical engineering: Mechanical engineers need to use floor plans to design mechanical structures, parts, and so on.