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In the given figure, AB||CD. Find the value of x. Asked by Santosh.kumar0317 | 19 Aug, 2019, 05:12: PM Expert Answer
AB || DC and AC is a transversal.

m BAC + m ACD = 1800 (Sum of Co - interior angle is 1800 )
→m ACD = 1800 - 750 = 1050
m ECF =m ACD  = 1050   ...(vertically opposite angles)
In ΔCEF, ECF + E + F = 180(Sum of all the three angles of a triangle is 1800)
→ 105 + x + 300 =1800
→  x = 450
Answered by Yasmeen Khan | 19 Aug, 2019, 05:46: PM

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