Post by GS_TG on Jun 13, 2015 8:14:44 GMT 7
Circle
From Latin : Circus(ring,round arena)
A line forming a closed loop, every point on which is a fixed distance from a center point.
A circle is a type of line. Imagine a straight line segment that is bent around until its ends join. Then arrange that loop until it is exactly circular - that is, all points along that line are the same distance from a center point.
In everyday use, the term "circle" may be used interchangeably to refer to either the boundary of the figure, or to the whole figure including its interior; in strict technical usage, the circle is the former and the latter is called a disk.
Arc: any connected part of the circle.
Center: the point equidistant from the points on the circle.
Chord: a line segment whose endpoints lie on the circle.
Circumference: the length of one circuit along the circle, or the distance around the circle.
Diameter: a line segment whose endpoints lie on the circle and which pA__es through the center; or the length of such a line segment, which is the largest distance between any two points on the circle. It is a special case of a chord, namely the longest chord, and it is twice the radius.
PA__ant: a coplanar straight line that does not touch the circle.
Radius: a line segment joining the center of the circle to any point on the circle itself; or the length of such a segment, which is half a diameter.
Sector: a region bounded by two radii and an arc lying between the radii.
Segment: a region, not containing the center, bounded by a chord and an arc lying between the chord's endpoints.
Secant: an extended chord, a coplanar straight line cutting the circle at two points.
Semicircle: a region bounded by a diameter and an arc lying between the diameter's endpoints. It is a special case of a segment namely the largest one.
Tangent: a coplanar straight line that touches the circle at a single point.
Images from wikipedia
The number Pi, denoted by the Greek letter π (Pie) is one of the most common constants in all of mathematics. It is the circumference of any circle, divided by its diameter. Nobody knows its exact value, because no matter how many digits you calculate it to, the number never ends. For most practical uses, you can A__ume it is 3.142.
Pi = 3.1415927
22/7 = 3.1428571
355/113 = 3.1415929
So 355/113 is much more accurate but this is more accurate...
Pi = 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679 8214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196 442881097566593344612847564823378678316527120190914564856692346034861045432664821339360726024914127372458700660631558817488152092096282925409171536436789259036001
For more ---> www.angio.net/pi/piquery
To calculate the area of circle ---> Pi*r*r
To calculate the circumference ---> Pi*d
Radius and diameter ---> 2r=d (r=radius,d=diameter)
From Latin : Circus(ring,round arena)
A line forming a closed loop, every point on which is a fixed distance from a center point.
A circle is a type of line. Imagine a straight line segment that is bent around until its ends join. Then arrange that loop until it is exactly circular - that is, all points along that line are the same distance from a center point.
In everyday use, the term "circle" may be used interchangeably to refer to either the boundary of the figure, or to the whole figure including its interior; in strict technical usage, the circle is the former and the latter is called a disk.
Arc: any connected part of the circle.
Center: the point equidistant from the points on the circle.
Chord: a line segment whose endpoints lie on the circle.
Circumference: the length of one circuit along the circle, or the distance around the circle.
Diameter: a line segment whose endpoints lie on the circle and which pA__es through the center; or the length of such a line segment, which is the largest distance between any two points on the circle. It is a special case of a chord, namely the longest chord, and it is twice the radius.
PA__ant: a coplanar straight line that does not touch the circle.
Radius: a line segment joining the center of the circle to any point on the circle itself; or the length of such a segment, which is half a diameter.
Sector: a region bounded by two radii and an arc lying between the radii.
Segment: a region, not containing the center, bounded by a chord and an arc lying between the chord's endpoints.
Secant: an extended chord, a coplanar straight line cutting the circle at two points.
Semicircle: a region bounded by a diameter and an arc lying between the diameter's endpoints. It is a special case of a segment namely the largest one.
Tangent: a coplanar straight line that touches the circle at a single point.
Images from wikipedia
The number Pi, denoted by the Greek letter π (Pie) is one of the most common constants in all of mathematics. It is the circumference of any circle, divided by its diameter. Nobody knows its exact value, because no matter how many digits you calculate it to, the number never ends. For most practical uses, you can A__ume it is 3.142.
Pi = 3.1415927
22/7 = 3.1428571
355/113 = 3.1415929
So 355/113 is much more accurate but this is more accurate...
Pi = 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679 8214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196 442881097566593344612847564823378678316527120190914564856692346034861045432664821339360726024914127372458700660631558817488152092096282925409171536436789259036001
For more ---> www.angio.net/pi/piquery
To calculate the area of circle ---> Pi*r*r
To calculate the circumference ---> Pi*d
Radius and diameter ---> 2r=d (r=radius,d=diameter)