How to draw the basketball line by yourself, especially the semicircle, how to draw the three point

First determine the diameter of the semicircle, and the center of the circle, and then use a rope, one end fixed in the center of the circle, straighten and rotate according to the radius, and at the same time leave traces with chalk, and then use paint to brush the traces along the traces. The three-point line is the same, but the rope is longer, and the packing tape can be rotated, which is a very cheap kind.

FIBA standard: The entire basketball court is 28 meters long and 15 meters wide. Long ratio: 28:15. The lower edge of the hoop is meters from the ground.

1. Stadium: It is a rectangular solid plane with no obstacles. For major FIBA official competitions, the court is measured from the inside of the boundary.

For all other matches, the appropriate FIBA department has the right to approve existing courts within the following dimensions: 4 metres in length and 2 metres in width, provided that the changes are proportionate to each other. The ceiling or minimum obstacle property height is at least 7 meters.

The lighting of the stadium should be uniform and the luminosity should be sufficient. The lighting equipment shall not be placed in such a way as to obstruct the vision of the team members. All new courts must be sized in accordance with the requirements set out in the main official FIBA competitions:

It is 28 meters long and 15 meters wide.

2. Lines: The width is meters (5 cm).

1) Boundary: The boundary of the stadium is at least 2 meters away from spectators, billboards or any other obstacles. The boundary on the long side of the pitch is called the sideline, and the boundary on the short side is called the end line.

2) Middle line: Draw a line parallel to the end line from the midpoint of the side line called the middle line; The midline should be extended by 15 cm (15 cm) beyond the edges on each side.

c) Free throw lines, restricted areas and free throw areas:

1.The free throw line should be parallel to the end line, and its outer edge should be one meter away from the inner edge of the end line; The length of this line is meters. Its midpoint must fall on the imaginary line connecting the midpoints of the two end lines.

2.The ground area formed by drawing two lines from each end of the free throw line to a place of 3 meters from the midpoint of the end line (both measured from the outer edge) is called a restricted area. If you shade inside a restricted area, it must be the same color as the inside of the center circle.

3.The penalty area is a semi-circle drawn outside the restricted area with the midpoint of the free throw line as the center of the circle and the meter as the radius. The semicircles in the restricted area should be drawn as dotted lines.

4.The position areas on either side of the penalty area are used by the players when taking the free throw. Here's how to draw it:

1) The first line is measured along the edge of the end line along the edge of both sides of the penalty area.

2) The width of the first position zone is m (85 cm) and is connected to the beginning of the neutral zone.

3) The width of the neutral zone is 040 meters (40 cm) and painted in the same color as the other lines.

4) The second position zone is adjacent to the neutral zone and has a width of meters (85 cm).

5) The third position area is adjacent to the second position area and is also meters (85 cm) wide.

6) All the lines used to draw these location areas have a length of 010 m (10 cm) and perpendicular to the outside of the penalty area touchline.

4) Middle circle: The middle circle should be drawn on the first side of the court, with a radius of meters, measured from the outer edge of the circle. If you shade the inside of the center circle, it must be the same color as the inside of the restricted area.

5) 3-point shooting area:

1.Respectively meters away from the edge line, two parallel lines are drawn from the end line;

2.An arc (semicircle) with a radius of meters (measured to the outer edge of the arc) intersects two parallel lines;

3.The center of the arc should be at the intersection of the vertical line of the center of the opponent's basket and the ground. The distance between the center of the circle and the midpoint within the end line is meters. Note: If the width of the pitch is less than 15 meters, the arc will still be drawn according to the above metre radius.

Taking the vertical projection point of the ground in the center of the basket as the center of the circle, the macro bird draws a semicircle with a radius of meters inward. Draw a straight line parallel to the edge from 1 meter from both ends of the bottom line.

Three-point line. It refers to an arc artificially drawn on the basketball court, which is semicircular, and the foothold of the basket is its center position. The ball that is outside this line and does not play the ball and does not prepare the court is a three-point shot.

The three-point line first originated in the ABI in the United States and was later adopted by the ABA, and the NBA did not officially introduce the three-point shot until the 1979-1980 season, when the three-point shot was only a "regular experiment" and the three-point shot had a great impact on the NBA.

By 1980-1981, the NBA had fully embraced the three-point system, with only minor changes in the 1994-1995 and 1995-1996 seasons, when the three-point line distance was 22 feet. So basketball didn't start with a three-point line, and the NBA began to use the three-point line earlier than the international game.

The farthest distance from the NBA three-point line to the basket is meters, more than FIBA.

The three-point line of the standard court should be far away.

Summary. The three-point line refers to an arc artificially drawn on the basketball court, which is semicircular, and the foothold of the basket is its center position. A three-point shot is made when it is outside the line and not out of the court.

The three-point line first originated in the ABI in the United States and was later adopted by the ABA, while the NBA did not officially introduce the three-point shot until 1979. The farthest point of the three-point line is meters from the basket, which is farther than the three-point line on the FIBA standard court. A thirds is made up of an arc with a radius of meters, a line, and two line segments located on both sides parallel to the edge.

Please wait patiently for a few minutes.

The foothold of the basket is its center position.

The three-point line refers to an arc artificially drawn on the basketball court, which is semicircular, and the foothold of the basket is its center position. The ball that is thrown outside the line and does not leave the court is a three-point shot. The three-point line originated in the ABI in the United States and was later adopted by the ABA, while the NBA did not officially introduce the three-point shot until 1979.

The farthest point of the three-point line is meters from the basket, which is farther than the three-point line on the FIBA standard court. The three-point line is formed by a radius of 7 and a radius of 25 meters, connected by two line segments located on both sides parallel to the sideline.

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How do you draw a three-point line on a basketball court?

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1. Find the length of the semicircle first: m).

Then calculate the length of the two parallel segments: m).

Finally, the length of the third-point line is calculated: m) m).

Answer: The length of the three-point line is meters.

2. Calculate the area between the two parallel lines first: s rectangle = square meter) and then calculate the area of the semicircle: s semicircle = square meter).

Finally, the area within the area of the third-line line is calculated as square meters) square meters) Answer: The area within the area of the third-line line is square meters.