Question

If x , 2x , 4x and 5x are the angles of a quadrilateral , then measurement of 4x is:
a. 90
b. 120
c. 60
d.150

Answer 1

Answer:

the sum of all angles in quadrilateral is 360°

x + 2x + 4x + 5x = 360°

12x = 360°

x= 360°/12

x= 30°

then 4x = 4×30 =120°

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