a) In the given figure we can find x by liner pair i.e.
x+10+x+20+x=180 (As angles made on straight line is of 180°)
3x+30=180
3x=180-30
3x=150
x=150/3
x=50
So in the first question x=50°
b)In the given figure we will also use linear pair
x+x+40=180
2x+40=180
2x=180-40
2x=140
x=140/2
x=70
So in the second question x=70°
Answer:
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EXPLANATION:-
a) In the given figure we can find x by liner pair i.e.
x+10+x+20+x=180 (As angles made on straight line is of 180°)
3x+30=180
3x=180-30
3x=150
x=150/3
x=50
So in the first question x=50°
_-_-_-_-_-_-_-(@devanshu1234321)_-_-_-_-_-_-
b)In the given figure we will also use linear pair
x+x+40=180
2x+40=180
2x=180-40
2x=140
x=140/2
x=70
So in the second question x=70°
_-_-_-_-_-_-_-(@devanshu1234321)_-
Answer:
1)50
2)70
Hope you got your answer