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  1. Writing standard equation of a circle - Khan Academy

    Given a circle on the coordinate plane, Sal finds its standard equation, which is an equation in the form (x-a)²+ (y-b)²=r².

  2. Circle equation review | Analytic geometry (article) - Khan Academy

    Review the standard and expanded forms of circle equations, and solve problems concerning them.

  3. Write standard equation of a circle | Analytic geometry (practice ...

    A circle has a radius of 37 units and is centered at (1.3, 3.5) . Write the equation of this circle.

  4. Graph a circle from its standard equation - Khan Academy

    Given the standard form equation of a circle, graph the circle. For example, graph the circle whose equation is (x+5)²+ (y+2)²=4.

  5. Graphing a circle from its standard equation - Khan Academy

    The standard form of the equation for a circle is: (x-h)^2 + (y-k)^2 = r^2 where (h, k) is the center of the circle and r is the radius of the circle. This is based on the distance formula where we …

  6. Features of a circle from its standard equation - Khan Academy

    Features of a circle from its standard equation CCSS.Math: HSG.GPE.A.1 Google Classroom You might need: Calculator

  7. Features of a circle from its standard equation - Khan Academy

    In the standard equation of a circle, -k would be the y-value of the center of the circle while -h would be the x-value of the center of the circle. Note the negative on h and k, and if k or h are …

  8. Circle equations | Lesson (article) | Khan Academy

    The standard form equation of a circle contains the squares of two binomials. Sometimes, we'll be asked to determine the center or radius of a circle represented by an equation in which the …

  9. Circle equation review | Analytic geometry (article) | Khan Academy

    Review the standard and expanded forms of circle equations, and solve problems concerning them.

  10. Circle equation review | Analytic geometry (article) | Khan Academy

    Review the standard and expanded forms of circle equations, and solve problems concerning them.