Circle With Center o and Radius r with point P
Circle modeling the earth. O is the center of the earth, r the radius of the earth, and h the height…
Central Angles and Arcs in a Circle
Illustration of a circle that can be used to show that an "angle at the center of a circle is measured…
Central Angles and Arcs in a Circle
Illustration of a circle that can be used to show that an "angle at the center of a circle is measured…
Central Angles and Arcs in a Circle
Illustration of a circle that can be used to show that an "angle at the center of a circle is measured…
Circle With Chord and Tangent
Illustration of a circle showing an angle included by a tangent and a chord drawn from the point of…
Circle With a Chord of 2 ft. and a Radius of 3 ft.
Circle with chord AB=2 ft. and radius OA = 3 ft.. Triangle AOC is a right triangle. Angle AOC=half angle…
Chords, Diameters, and Radii of a Circle
Illustration of a circle with diameter AB. Radii are RO, SO, AO, and BO. ED is a chord.
Chords, Secants, Diameters, and Tangents of a Circle
Illustration of a circle with diameter BC, chord DF, secant MN, and tangent HK.
Circle With Circumference Through Three Points
Illustration of a circle which illustrates that through three points not in a straight line one circumference,…
Circle with Circumscribed Polygon
Illustrations of a circle with a circumscribed polygon. Or, a circle inscribed in an octagon.
Common Form of Circle
A circle in its common, or central form. This is used to assist students in finding the equation of…
Conic Section Showing A Circle
Illustration showing the definition of a circle as a conic section. The section of a right circular…
Conic Section Showing A Circle
An illustration showing the intersection of a plane and a cone. The cone is intersected by a plane parallel…
Decagon Circumscribed About A Circle
Illustration of a decagon circumscribed about a circle. This can also be described as a circle inscribed…
Decagon Inscribed In A Circle
Illustration of a decagon inscribed in a circle. This can also be described as a circle circumscribed…
Circle With Diameter and Chord
Illustration of a circle with diameter and chord drawn. A diameter perpendicular to a chord bisects…
Diameter Perpendicular to a Chord in a Circle
Illustration used to show that "The diameter perpendicular to a chord bisects the chord and also its…
Circle With Diameter, Radius, Segment
Illustration showing a circle with a diameter, radius, and segment drawn.
Circle With Diameter, Radius, Segment, Line
Illustration showing a circle with a diameter, radius, lines, triangle, and segment drawn.
Dodecagon Circumscribed About A Circle
Illustration of a dodecagon circumscribed about a circle. This can also be described as a circle inscribed…
Dodecagon Inscribed In A Circle
Illustration of a dodecagon inscribed in a circle. This can also be described as a circle circumscribed…
Circle With Equal Chords
Illustration of a circle with equal chords, which are equally distant from the center.
Find The Center Of A Circle Through 3 Points
An illustration showing how to find the center of a circle which will pass through three given points…
Hexagon In A Circle
Illustration of a hexagon in a circle. Four of the six vertices of the hexagon are bound by the circle…
Hexagon Inscribed in Circle
Illustration of hexagon inscribed in circle. Or, circle circumscribed about hexagon.
Circle With Inscribed Angle Greater Than Semicircle
Illustration of a circle with an angle inscribed in a segment greater than a semicircle, an acute angle.
Circle With Inscribed Angle Less Than Semicircle
Illustration of a circle with an angle inscribed in a segment less than a semicircle, an obtuse angle.
Circle Inscribed in a Right Triangle
Illustration showing the diameter of a circle inscribed in a right triangle is equal to the difference…
Circle With Inscribed Right Angle in Semicircle
Illustration of a circle with a right angle inscribed in a semicircle.
Circle With Triangles and Circle Within
Illustration showing a circle with equilateral triangles and another circle within.
Involute of Circle
"A circle may be conceived as a polygon of an infinite number of sides. Thus to draw the involute of…
Nonagon Inscribed in a Circle
Illustration of a regular nonagon inscribed in a circle. This could also be described as a circle circumscribed…
Pentagon Inscribed in Circle
Illustration of pentagon inscribed in circle. Or, circle circumscribed about pentagon.
Circle With a Perpendicular Drawn to the Diameter
"If from any point on the circumference of a circle, a perpendicular be let fall upon a given diameter,…
Polygon Circumscribed About Circle
Illustration of polygon circumscribed about circle. Or, circle inscribed in the polygon.
Polygon Inscribed in Circle
Illustration of polygon inscribed in circle. Or, circle circumscribed about the polygon.
Quadrilateral Circumscribed About a Circle
Illustration of a quadrilateral circumscribed about a circle. This could also be described as a circle…
Quadrilateral Inscribed In A Circle
An illustration showing a quadrilateral inscribed in a circle that is tangent to a line.
Circles With Radius 4000 and Enclosed Triangle
Illustration of circle with radius of 4000, and triangle with 45 degree angle enclosed.
Radius, Diameter, and Chord In A Circle
An illustration showing a circle with radius r, diameter d, and chord c.