1 Answer

Zubia · Answer 1 · 2024-12-11T16:30:18+0000

Answer:

19°

Concept used:

Property of Cyclic Quadrilaterals (Quadrilateral inscribed in a circle)

(Sum of opposite angles is 180 deg)

Explanation:

$= > 123 + 3x = 180\\\\= > x = (57)/(3)\\\\= > x = 19^(o)$

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