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Find the lettered angles in the figure below (O is the centre of each circle)​

Find the lettered angles in the figure below (O is the centre of each circle)​-example-1
User Ruud
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Answer:

t and u are supplementary as opposite angles of a cyclic quadrilateral.

t = 180 - (81 + 53) = 46

u = 180 - t = 180 - 46 = 134

v and w are equal as opposite angles to equal sides.

v = w = 1/2(180 - u) = 1/2(180 - 134) = 23

Explanation:

User Basim Khajwal
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