Walk in three steps,

1, first draw any angle (acute angle, less than 90 degrees) with a ruler.

2. Mark the bisector and acute bisector with compasses and pencils respectively. (The method is as follows)

3. Use a ruler to extend the two sides, bisector and bisector of this acute angle, and compare a line segment with any length to this acute angle (the line segment is 90 degrees from the bisector, and the endpoints on both sides of the line segment are in contact with both sides of the acute angle. )

Among them, the bisector of acute angle falls to two points on the line segment, which is the bisector of this line segment.

How to find acute bisector and bisector;

Acute angle (less than 90 degrees)

1. First, take the radius of a compass at will and draw a circle p around the center (point O) of the measured angle.

2. Take two points of circle P on the radius of the measured angle, and draw circles L and K (with the same radius).

3. Take the intersection of the circle L and K, and draw a circle (with the same radius). It is found that the straight line connecting the two intersections is the center line (OA) of the measured angle.

4. Draw a circle J around point A (with constant radius) and find that it intersects with circles L and K (H, G).

5. Draw a circle (with constant radius) around H and G, which will intersect with the circle J (F, d). Connect point f, point d and point o, this is a line that is divided into three parts.