252 Videos for "circles"

The Circle  Problem 3
Math › Precalculus › Conic Sections
How to find the center and radius of a circle by completing the square. 
The Circle  Problem 1
Math › Precalculus › Conic Sections
How to find the equation for a circle given the center and radius. 
The Circle  Problem 4
Math › Precalculus › Conic Sections
How to use two endpoints of a diameter to create the equation for a circle. 
The Circle  Concept
Math › Precalculus › Conic Sections
How to use the distance formula to derive the equation for a circle. 
Equation of a Circle  Problem 3
Math › Geometry › Pythagorean Theorem
How to write the equation of a circle given the center and a point on the circle. 
The Circle  Problem 1
Math › Algebra 2 › Conic Sections
How to find the equation for a circle given the center and radius. 
The Circle  Problem 2
Math › Algebra 2 › Conic Sections
How to find the center and radius of a circle given an equation. 
Chords and a Circle's Center  Problem 1
Math › Geometry › Circles
How to find the length of two chords where the length of the perpendicular bisectors are given. 
Parts of a Circle  Concept
Math › Geometry › Geometry Building Blocks
How to define a circle and identify its main parts. 
Equation of a Circle  Concept
Math › Geometry › Pythagorean Theorem
How to derive the equation for a circle using the distance formula. 
Parametrizing a Circle  Concept
Math › Precalculus › Vectors and Parametric Equations
How to write the parametric equations of a circle centered at (0,0) with radius r, oriented counterclockwise. 
Parametrizing a Circle  Problem 3
Math › Precalculus › Vectors and Parametric Equations
How to write the parametric equations of a circle or semicircle centered at (0,0) with radius r, oriented clockwise. 
Equation of a Circle  Concept
Math › Trigonometry › Pythagorean Theorem
How to derive the equation for a circle using the distance formula. 
Area of Circles  Problem 2
Math › Geometry › Area
How to find the circumference of a circle if the area is given. 
Cyclic Quadrilaterals and Parallel Lines in Circles  Concept
Math › Geometry › Circles
How to prove that opposite angles in a cyclic quadrilateral are congruent; how to prove that parallel lines create congruent arcs in a circle. 
Cyclic Quadrilaterals and Parallel Lines in Circles  Problem 2
Math › Geometry › Circles
How to calculate the measure of an arc created by a cyclic parallelogram. 
Area of Circles  Concept
Math › Geometry › Area
How to derive the formula to calculate the area of a circle. 
Calculating Coordinates in the Unit Circle  Concept
Math › Trigonometry › Pythagorean Theorem
How to describe the unit circle. How to draw the unit circle and label its parts. How to strategize about finding coordinates on the unit circle. 
Calculating Coordinates in the Unit Circle  Concept
Math › Geometry › Pythagorean Theorem
How to describe the unit circle. How to draw the unit circle and label its parts. How to strategize about finding coordinates on the unit circle. 
Area of Circles  Problem 1
Math › Geometry › Area
How to calculate the area of a circle if a diameter is given.