Question

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Answer 1

Answer:

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Step-by-step explanation:

1.d=$60^{0}$................vertically opposite angle

b+60=180...............straight angle

so,  b=120

b=c=120.................vertically opposite angle

d=e=60.......alternate angle

f=b=120.....corresponding angle

g=c=120..........corresponding angle

d=h=60.........corresponding angle

2.70+50+a =180............sum of interior angles of a triangle

120+a=180

a=60

3.B=50....vertically opposite angle

4.x+40+55=180......whole part axiom of a straight angle

x+95=180

x=85

Answer 2

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The collision of the particles with the walls of the vessels give rise to the pressure of the gas.