Question

problem-solving the sizes of the angles in a quadrilateral are in the ratio 2:4:5:7. what size is the largest angle?

Answer 1

let the angle be 2x, 4x, 5x and 7x.

sum of all angles = 360°

2x+4x+5x+7x = 360°

18x= 360°

x = 360°/18

x = 20°

put the value of x.

2x =2× 20 = 40

4x = 4× 20 = 80

5x = 5× 20 =100

7x = 7× 20 = 140

hope it will help you.

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Answer 2

your answer is 40

80

100

140