Question

Question 5.
In the given figure 1 || m. Find the values of a, b and c.
120
400V
Kb
m
b
45°
557
m​

Answer 1

i) In the triangle, the sum of all angles will be 180°

So 120°+40°+a = 180°

a=20°

Now, it is given that l ║ m.

So b=40° (Transversal angle)

a+b+c=180°(Straight Line)

20°+40°+c=180°

c=120°

ii)Similarly in 2nd one:-

45°+55°+b=180°

100°+b=180°

b=80°

c=55°(Transversal angle)

a=45°(Transversal angle)