Question

pleased tell correct answer only​

Answer 1

Answer:

1

x+4x+3x+x=180

9x=180

x=20

2

5x+x=180

6x=180

x=30

3

a=45      (vertically opposite)

a+c=180

c=180-45=135

b=c...............vertically opposite

b=135

Answer 2

Step-by-step explanation:

fig. (a)

x+4x+3x+x = 180°

9x = 180°

x = 180/9

x = 20°

x = 20°

4x = 80°

3x = 60°

x = 20°

fig. (b)

5x+x = 180°

6x = 180°

x = 180/6

x = 30°

5x = 150°

x = 30°

fig. (c)

a = 45° (vertically opposite angles)

b = 180° - 45° = 135°

c = 135° (vertically opposite angles)

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