Math, asked by harshrao23, 1 year ago

19. The angles of a quadrilateral are in AP. If the least
angle is 60°, find the other angles.​

Answers

Answered by deepakdnayak2004
0

Answer:

60 , 80 , 100 , 120

Step-by-step explanation:

given 60 is the lowest angle

so , a = 60

angle sum of a quadrilateral is 360,

therefore Sn=360,

there are 4 angles ,

so , n =4

d=?

Sn=n/2(2a+(n-1)d)

360 =4/2(2×60+(4-1)d)

360=2(120+3d)

360/2=120 + 3d

180= 120 +3d

180-120=3d

60=3d

60/3=d

20 =d

therefore d =20

so we can write the AP as 60 ,80 ,100, 120.

therefore the angles are 60,80,100,120.

pls mark as brainiest

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