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Induction of Math Painting Problems in Junior High School
There are five basic types of ruler drawing required by junior high school.

After learning these five kinds, others are basically their "children and grandchildren".

(1) makes a line segment equal to a known line segment.

(2) Make an angle equal to the known angle.

(3) perpendicular bisector is a line segment.

(4) Make an angular bisector

(5) A vertical line passing through a known point.

PS:

1, remember to leave it as a trace when drawing with a ruler.

2. The auxiliary line is a dotted line.

Finally, remember to answer questions and remember to "answer".