Answer:
The value of x is 116° and y = 90°
Explanation:
Given that opposite supplementary angles in a cyclic quadrilateral is 180° :
x = 116°
y = 90°
∠F = 90°, so arc EDS = 180°.
Therefore, arc EFS = 360° − 180° = 180°. Which means ∠D = 90°.
Angles of a quadrilateral add up to 360°, so:
x + 90° + 90° + 64° = 360°
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