Mr Joyce Math 11 - Angles in a Circle II

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Uploaded by on Apr 28, 2010

In this lesson we look at the relationship between central and inscribed angles, and inscribed angles from equal arcs

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  • 75 - 35 = 40, therefore all bottom equal angles are 40.

    then we know 70 + 40 = 110 so the middle angles are 70. so the vertical angles in the middle (the unmarked ones) are 360 - (70x2) = 360 -140 = 220.

    so each unmarked angle is 110. (220/2)

    a couple of steps off being lost there.

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  • ooopssorry that was my robot :s

    very helpful video

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