What is the math definition of diameter?

What is diameter in math definition?

Definition of diameter



1 mathematics : a chord (see chord entry 3 sense 2) passing through the center of a figure or body. 2 mathematics : the length of a straight line through the center of an object or space the diameter of a circle dug a hole nearly four feet in diameter.

What is the example of a diameter?

Diameter is defined as the length of a straight line through the center of a circle. An example of a diameter is the length of a line sliced down the center of a pie.

What is the scientific definition of diameter?

Diameter. The length of a straight line passing through the centre of a circle and connecting opposite points on its circumference, hence the distance between two specified opposite points on the periphery of a structure such as the cranium or pelvis.

How do you find diameter?

How do I find the diameter from the circumference?

1. Divide the circumference by π, or 3.14 for an estimation.
2. And that’s it; you have the circle’s diameter.

What is diameter and radius?

The diameter is a straight line that passes through the center of the circle. The radius is half of the diameter. It starts from a point on the circle, and ends at the center of the circle.

How do you find the diameter and radius?

Video quote: Your radius will be 3 inches therefore number one and again the radius is the distance. From the center of the circle to the edge. Now for number 2 we have diameter.

What is the diameter of 7 centimeters?

Answer. Here,diameter is 7 cm. So radius is 7/2=3.5 cm.

What is circle name?

A circle is named by its center. Thus, the circle to the right is called circle A since its center is at point A. Some real world examples of a circle are a wheel, a dinner plate and (the surface of) a coin. The distance across a circle through the center is called the diameter.

How do you write radii?

When the diameter is known, the formula is Radius = Diameter/ 2. When the circumference is known, the formula is Radius = Circumference/2π. When the area is known, the formula for the radius is Radius = ⎷(Area of the circle/π).

What is a circle in math definition?

A circle is a round shaped figure that has no corners or edges. In geometry, a circle can be defined as a closed, two-dimensional curved shape.

How do you draw a circle in geometry?

Video quote: So segment a B represents the radius of a circle the diameter passes through the center of the circle. And it's twice the length of the radius. So this is the diameter.

What do you call the term used to describe the half of a diameter?

Answer: Half of a diameter of a circle is called the radius.

How do you find the diameter of a circle with an angle?

Video quote: To answer the question and find the diameter circumference is equal to D times pi which is 32. So all I did was plug in D times pi divide both sides by PI.

Is diameter a chord?

(a) Yes, every diameter of a circle is also a chord because a chord of a circle is any line segment joining two points on the circle’s circumference.

How many diameters can you draw in one given circle?

infinite diameter can be drawn in a circle.

Is a diameter a secant?

A secant is an extension of a chord in a circle which is a straight line segment of which the endpoints lie on the circle. If the same chord passes through the centre of the circle, then it is a diameter. So an extended Diameter is a secant.

How do I find the name of a circle?

Video quote: Now we name a circle by its center. So this circle would be named circle a because this is our center right here it's labeled a and again we name our circle by the center.

How do you write the diameter of a circle?

Diameter of a Circle Using Radius



Radius is the length of the line segment from the center of the circle to an endpoint on the circle and diameter is twice the length of the radius of the circle. Using this definition, the formula for the diameter is D = Radius × 2.

What does the diameter of a circle look like?

Video quote: And it is a chord that passes through the center of the circle. So it is a diameter notice we're saying a diameter of the circle. Because there are infinitely many diameters.

How do you label a chord in geometry?

Video quote: Now any of the two points on a circle if we have a line between them or rather a segment between those two points that's known as a chord.

What is secant in circle?

In geometry, a secant is a line that intersects a curve at a minimum of two distinct points. The word secant comes from the Latin word secare, meaning to cut. In the case of a circle, a secant intersects the circle at exactly two points.

What is the arc of a circle?

The arc of a circle is defined as the part or segment of the circumference of a circle. A straight line that could be drawn by connecting the two ends of the arc is known as a chord of a circle. If the length of an arc is exactly half of the circle, it is known as a semicircular arc.

What do you call the angle whose vertex is the center of the circle?

Central Angle



An angle whose vertex is the center of a circle.

What do you call the set of all points that are at the same distance from a given point in the plane?

circle

Definition: A circle is the set of all points in a plane that are equidistant from a given point called the center of the circle. We use the symbol ⊙ to represent a circle.

What do you call to an arc in which measures is greater than 180 *?

An arc whose measure is greater than 180 degrees is called a major arc. An arc whose measure equals 180 degrees is called a semicircle, since it divides the circle in two.