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Find the values of the angles $ x, y, $ and $ z $ in each of the following:
"
To do:
We have to find the values of the angles \( x, y, \) and \( z \) in the given figures.
Solution:
We know that,
Vertically opposite angles are equal.
Sum of the angles in a linear pair is $180^o$.
Therefore,
(i) $x=55^o$ (Vertically opposite angles)
$y+55^o=180^o$ (Linear pair)
$y=180^o-55^o$
$y=125^o$
$z=y=125^o$ (Vertically opposite angles)
(ii) $z=40^o$ (Vertically opposite angles)
$y+40^o=180^o$ (Linear pair)
$y=180^o-40^o$
$y=140^o$
$z+x+25^o=180^o$ (Linear pair)
$x=180^o-25^o-40^o$
$x=115^o$
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