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The circle below has center Z. Suppose that m XY = 122°. Find the following.

The circle below has center Z. Suppose that m XY = 122°. Find the following.-example-1

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Answer:

m∠XZY = 122°

m∠XWY = 61°

Explanation:

From the picture attached,

A circle has been given with center as Z.

∠XZY is a central angles subtended by the arc XY,

Therefore, measure of angle XZY will be equal to measure of ∠XZY.

m(∠XZY) = m(arc XY) = 122°

By another property of the circle,

"Inscribed angle measures the half of the central angle intercepted by the same arc."

Therefore, m∠XWY =
(1)/(2)(\angle XZY)

=
(1)/(2)(122)

= 61°

User Thetrystero
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