Question

maths class 7 lines and angles
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Answer 1

Answer:

X= 100° , Y= 150° , Z= 30°

X+ 30 +50 = 180° ( forming a straight line)

X+ 80= 180

X= 180-80

X= 100°

Z= 30 ° (opposite angles are equal)

Y+z= 180° ( forming a straight line)

Y+30= 180

y= 180-30

y= 150 °

Answer 2

z = 30 /vertically opposite angles

now

x + z + 50 = 180 /linear pair axiom

x + 30 + 50= 180

x = 180 -80

x = 100

similarly

30 + y = 180 /LPA

y = 180 -30

y = 150

conclusion :-

x = 100

y = 150

z = 30

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