Question

Four angles of an irregular quadrilateral are in the ratio 1:2.4.5. Find the measure of each angle.
(Hint: the sum of the angles of a quadrilateral is 360°.)

Answer 1

Answer:

1x+2x+4x+5x=360

12x=360

x=360/12

x=30

1x=1×30=30

2x=2×30=60

4x=4×30=120

5x=5×30=150

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