More Angles In Circles

More Angles In Circles

4.7.21

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What is the mystery number?

Angles 1 and 2 are equal to the average of their intercepted arcs AC and DB

m<1 = (x + y) / 2

x = (91 + 85)/2 = 176/2 = 88 [Y has to be supplementary]

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What is the measure of x?

Fill in the Blank

What is the measure of x?

Multiple Choice

What is the value of x?

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With tangents and secants, there is an intersection point OUTSIDE the circle. Formula is half the difference of the arcs.

The question asks us to find the outside angle C. How can we do that if we're only given one angle?

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What is the measure of angle x?

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Find that x

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The picture changes a little each time, but the method of doing these problems doesn't! What's x?

Multiple Choice

Set up an equation -- scrap paper will help! Find x as usual.

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Multiple Choice

It's the final slide! What is the value of x?

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• 36