How to make a cone?
The cone is a geometric figure consisting ofthe base (circle), the vertex (a point not lying in the plane of the circle) and forming a cone (the segments that connect the vertex and the base). How to make a cone: making a cone yourself is easy enough. To make it, you need scissors, glue, compasses, paper or cardboard. A ready-made cone can be used as a visual aid for children in the study of geometric figures. Cone can be used as a basis for the manufacture of various toys and crafts. You can make smart caps for a birthday or a masquerade, a Christmas tree and much more.
How to make different cones
- How to make a cone of paper: take a piece of paper, draw a circle with the help of a circular (the larger the diameter of the circle, the more the cone will turn out). Then we divide our circle-workpiece by means of a ruler into four equal sectors. Then one sector is cut out, we fold the workpiece and glue it together. If the cone needs a narrower one, you can cut out not one, but two or three sectors, the rest of the fold and glue.
- How to make a cone of cardboard: From the cardboard, the cone is made in the same way as paper. We take a sheet of cardboard, draw a circle and divide it into sectors, cut out the necessary number of sectors, turn off the workpiece and glue. The main thing to remember is, the larger the cut out segment, the more the cone will turn out.
- How to make a truncated cone: for this we take a piece of paper and draw two circles of different diameter, one larger, the second smaller by means of a circular. Then we divide our workpiece into equal sectors, cut out the inner circle of smaller diameter and the necessary number of sectors, turn off our workpiece and glue, then cut out a circle with a diameter equal to the diameter of the tip of our truncated cone and paste it.
What is a cone scan
To produce a cone of the right proportions,you can use a special sweep. It will help to make the cone the right size and shape, so that it does not turn out to be too "thick" or too "long and narrow".
How to make a cone scan: for this you need a pencil, a paper. compasses and the cone parameters - the radius of the base and the height. The length of the lateral arc is equal to the length of the base of the cone. Calculate it using the formula l = 2? R (l is the length of the circle of the base of the cone, n is a constant coefficient, which is 3.14, r is the radius of the base). Next, calculate the angle of the arc. Knowing that the cone is the body that is formed as a result of the rotation of the triangle around the leg. This is the height of the cone. It is necessary to find the hypotenuse, which will be the radius of the lateral arc. It can be calculated from the formula R2 = r2 + h2 (R is the radius of the lateral arc, r is the radius of the base, and h is the height of the cone). Next, calculate the value of the share of the lateral arc in the circle (k = R / r, k is the share of the lateral arc, where R is the radius of the lateral arc, r is the radius of the base). Dividing 360 degrees by the share of the side arc, we get the angle of the arc. Now that all the parameters have been calculated, you can draw a sweep. On a sheet of paper using a pencil and ruler, we draw a segment equal to the radius of the lateral arc, with the help of the protractor we set aside the required angle and draw another segment. We connect the end points of the segments by arc using a compass. Such a sweep can be used for a truncated cone, you just need to make the appropriate calculations.
