The straight line y= 1 is a straight line equal to the X axis, and the distance from the origin is one unit length.

A symmetric graph is symmetric about x, that is, the straight line Y =- 1.

Draw △abc according to the given dot, and then draw a straight line Y = 1 with a dotted line.

Then you use a ruler, put it vertically on the straight line y= 1, and one end is connected with point A, then measure the distance between A and the straight line, and then start from the straight line and trace the position of A' at the other end with just the right distance. ..

So, draw two other points. Then connect these three points with a line.