Question

6.
Find the values of x and y in the figure.
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Answer 1

Answer:

In figure angle y and 140 are linear pair

so,y+140=180

y=180-140=40

exterior angle=sum of its opposite interior angles

so,x=30+y

x=30+40=70

so,y=40

x=70

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Answer 2

Answer:

Step-by-step explanation:

y°=180°-140°(linear pair of angle)

=40°

In ∆,

30°+40°+? =180°(because sum of all angles of a ∆ is equal to 180°)

70°+?=180°

?=180°-70°

?=110°

x+110°=180°(linear pair of angle)

x=180°-110°

x=70°

y°=40° and x°=70°