1, preparation tools: First, you need a pencil and an eraser. Pencils are used to mark the center and radius, and erasers are used to correct mistakes. Determine the center of the circle: draw a point on the paper with a pencil as the center of the circle. This point can be anywhere, depending on the position of the circle you want to draw.
2. Determine the radius: draw a straight line with a pencil from the center of the circle to any point on the paper, which is the endpoint of the radius. Then use a ruler to measure the length of this straight line, which is the length of the radius. Fix the center of the circle: put one foot of the compass on the center of the circle to ensure that it is firmly fixed on the paper. This will prevent you from moving the center of the circle when you draw it.
3. Rotate the compass: put the other foot on the endpoint of the radius, and then rotate the compass to make the other foot move in a straight line. Keep the angle of the compass constant until you return to the starting point. Draw a circle: When the two legs of the compass meet again, you draw a perfect circle. You can draw a circle with a pencil along the track of the other foot of the compass.
4. Correct mistakes: If you find any mistakes or imperfections in the circle, you can erase the wrong part with an eraser and redraw it. Measuring length: In addition to drawing circles, compasses can also be used to measure length. Put one foot on one point and the other foot on another point, and then read the scale on the ruler to get the distance between the two points.
The function of compass
1. First, compasses can be used to draw circles. When using the compass, put the fixed foot in the center of the paper, and then rotate the movable pencil point around the fixed foot to get a perfect circle. Compasses can help us draw the circle we need accurately, no matter how big or small it is.
Secondly, compasses can also be used to measure length. By adjusting the distance between the movable pencil point and the fixed foot, we can measure the linear distance between two points. This is very important for engineering, architecture, design and other fields that need accurate length measurement.
In addition, compasses can also be used to draw other shapes, such as ellipses and regular polygons. By adjusting the position and angle of the movable pen head, various complex geometric figures can be drawn.
Besides the application in drawing and measuring, compasses can also be used to make handicrafts and decorations. Using compasses skillfully can make exquisite lace, patterns and ornamentation, adding a unique aesthetic feeling to handmade works.