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Understanding Quadrilaterals — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSUnderstanding Quadrilaterals2 Marks
Question
Find the angle measure $x$ in this figure.
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Answer

$x + 50^\circ + 130^\circ + 120^\circ = 360^\circ $ [By angle sum property of a quadrilateral]
$\therefore $ $x + 300^\circ = 360^\circ $
$\therefore $ $x = 360^\circ – 300^\circ $
$\therefore $ $x = 60^\circ $

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