Question

in the given figure find x

Answer 1

the first line and second line are parallel
so draw a dotted line from second line and join it to base

then the angle formed by the intersection of dotted line and base will be equal to the angle formed on the intersection of first line and base that is 100°

after that you can see that there's a triangle forming because of dotted line

name it ABC
so now in triangle ABC
angle A=25°
angle B=100,°

as the exterior angle theorem works here states that sum of opposite interior angles of triangle equal s to exterior angle

angle a+ angle b =angle x
100°+25°=125°

angle x=125°
hope it helps

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