please solve b part
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if the lines in the given figure are parallel then Angle (y) and 25° are alternate interior angles
and are equal,
therefore Angle (y) = 25°
In the triangle on the right side of the figure,
Angle (z) + Angle (y) + 25° = 180°
[Angle Sum Property Of ∆]
z + 25° +25° = 180°
z = 180° -(25+25)°
angle (z) = 130°
Angle (x) and Angle (z) lie on a straight line and thus form a linear pair,
Angle (x) + Angle (z) = 180° [linear pair]
X + 130° = 180°
Angle x = 180° - 130°
Angle (x) = 50°
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