How to Calculate the Arc Length Central Angle and Circumference of a Circle

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Tip 1 - Finding central angle measure given arc length

Published: 9 years, 1 month(s) ago | Submitted by Sara Qazi | permalink

For further reading: https://www.khanacademy.org/math/geometry/cc-geometry-circles/circles/v/finding-central-angle-measure-given-arc-length ^[1]

Tip 2 - Circle Arc Equations Formulas Geometry Calculator - Central Angle

Published: 9 years, 1 month(s) ago | Submitted by Magictiger | permalink

Geometry calculator solving for circle central angle given arc length and radius
Tags: math geometry calculator circle diameter radius circumference area arc central angle segment chord length midpoint sector

For further reading: http://www.ajdesigner.com/phpcircle/circle_arc_length_theta.php ^[2]

Tip 3 - Arc Length and Circumference

Published: 9 years, 1 month(s) ago | Submitted by Mike Tennent | permalink

Yes, Arc Length and Circumference isn’t particularly exciting. But it can, at least, be enjoyable. We dare you to prove us wrong.
Tags: Arc Length and Circumference, Circles, geometry, math, guide, study, teach, teaching

For further reading: http://www.shmoop.com/circles/arc-length-circumference.html ^[3]

Tip 4 - Central Angles of a Circle

Published: 9 years, 1 month(s) ago | Submitted by Raffaele Falcone | permalink

$Central Angles of a Circle$

My teacher said that the central angles of a circle are equal to the measure of the arc, but I don't understand on how this could possibly work. Can someone please explain how this is possible?

For further reading: http://math.stackexchange.com/questions/810690/central-angles-of-a-circle ^[4]