Question

In the given figure, BEST is a parallelogram. Find the value of (x+y+z).
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Answer 1

Answer:

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x =100

by opposite are equal in parallelogram

180 = x+y by adjacent angle of llgm

z = 80

y = 180 - z

y =100

x+y+z = 100+80+ 100

x+y+z = 280

Answer 2

x=100°[Being opposite angles of a parallelogram]

y=x[Being corresponding angles]

y=100°

y+z=180°[Linear pair]

or,100°+z=180°

or,z=180°-100°

 z=80°

now,

(x+y+z)

=100°+100°+80°

=280°   ans

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