Question

In Fig 8.56, lines l1 and l2 intersect at O, forming angles as shown in the figure. If x = 45, find the values of y, z and u.

Answer 1

Answer:

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Answer 2

Given : lines l1 and l2 intersect at O, forming angles and x = 45°.

z = x = 45° (Vertically opposite angle)

 

z and u angles form a linear pair, therefore,

z + u = 180°

45° + u = 180°

u = 180°  – 45°

u = 135°

x and y angles form a linear pair, therefore,

x + y = 180°

y = 180° – x

y =180°  -  45°

y = 135°

Hence, the values of y = 135° , z = 45° and u = 135°.

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