1, circle: first select a central point on the paper, then draw equidistant points with compasses or line segments and fixed points as the center, and then connect these points to get a circle.

2. Triangle: First, determine three vertices on the paper, and then connect these vertices with a ruler to get three sides. Next, measure three internal angles with a protractor, mark the angles on the corresponding sides, and then connect the marked points of these angles to get a triangle.

3. Rectangle: First, determine two adjacent vertices on the paper, and then connect these vertices with a ruler to get two edges. Next, measure the right angles with an angle gauge, mark the right angles on the corresponding sides, and then connect the marked points of these right angles to get a rectangle.

4. Quadrilateral: First, determine four vertices on the paper, and then connect these vertices with a ruler to get four edges. Note that the sides of a quadrilateral can be any length and any angle, so the shapes of the quadrilateral can be varied.