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Angle Measures in Circles

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Not Right For WatchKnowLearn
Ages: 15 - 18
640 Views:
Three Points Defining a Circle - Khan Academy
From YouTube, produced by Sal Khan
Sal Khan demonstrates that three points uniquely define a circle and that the center of a circle. (10:08) about. (10:08)
October 12, 2011 at 09:09 PM
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Not Right For WatchKnowLearn
Ages: 10 - 14
823 Views:
Angle Measures in Circles
From YouTube, produced by YourTeacher
Students are instructed to find the value of x, using the circle shown on the screen.  The measure of an angle formed by two chords that intersect inside a circle is equal to half the sum of the measures of the intercepted arcs.  Video goes through t... [more]
July 23, 2009 at 03:09 PM
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Not Right For WatchKnowLearn
Ages: 11 - 18
255 Views:
Solving Intercepted Arcs: Ants in Space (Interactive)
From pbs.org, produced by MathActive
Investigate various types of angles formed by radii, chords, secants and tangents and the arcs of circles that they intercept. Enhance understanding with practice problems and an interactive assessment.
July 18, 2012 at 03:46 PM
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