Question

The angles of a quadrilateral are in A.P (Arithmetic Progression) with common difference 20°. Find its angles .

Answer 1

Answer:

the angles are 60,80,100,120

Answer 2

Let angles be a,b,c and d

Let common difference be D

So

a+b+c+d=360

a+a+D+a+2D+a+3D =360

4a+6D=360

2a+3D=360/2=180

2a+3(20)=120

a=60

b=60+20=80

c=80+20=100

d=100+20=120

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