Question

2.
ABCD is a quadrilateral in which angle A = (2x +1)°, angle B = (4x – 10)°, angle C = (x +15°,
angleD = (x +10), then x is


options



1) 43°
2) 73°
3) 34°
4) 63°

please answer

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Answer 1

Answer:

2) 43°

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Explanation:

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Answer 2

Answer:

43°

Explanation:

For a quadrilateral,

∠A+∠B+∠C+∠D=360°

⇒2x°+1°+4x°-10°+x°+15°+x°+10°=360°

⇒8x°+16°=360°

⇒8x°=360°-16°

⇒8x°=344°

⇒x°=344°/8

⇒x°=43°