Question

(ix) If in a cyclic quadrilateral ABCD, angleA:angleB:angleC = 2:3:4, then find angleD.
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Answer 1

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Answer 2

Answer:

Step-by-step explanation:

the sum of all angles of the quadrilateral is equal to 360 degree

angle a + Angle B + angle C + angle d is equal to 360 degree

2 X + 4 + Y + 3 + 2 Y + 10+ 4X-5=360

6X+3Y+12=360

3X+Y+4=120