This is a mind map about straight line problems in plane analytic geometry, including: Topic 1: Finding equations of straight lines; Topic 2: Distance between parallel lines;
Topic 3: Solve the equations of straight lines corresponding to the sides of a triangle; Topic 4: Solve the straight line corresponding to the center line of the three major lines of the triangle; Solve the straight line corresponding to the height of the three major lines of the triangle. Topic 5: Solve the straight line corresponding to the height of the three major lines of the triangle.