Math Circles

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10 Terms

1
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Circumference

C = 2πr C= πd

2
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Area of the circle

A = πr²

3
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Arc Length (in degrees)

L = feta/ 360 times 2πr

4
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Arc Measure (degree)

measure of central angle

5
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Inscribed angle

½ (Arc Measure)

6
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Equations of a circle formula

(x-h)² +(y- k)²= r²

7
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Arc Length (in degree)

L = feta/ 360 times 2πr

8
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Arc Measure (degree)

measure of central angle

9
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Sector Area (degrees)

A = feta/360 time πr²

10
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Segment area

sector area - triangle area