Question

lines and angle class 7 maths please answer​

Answer 1

Answer:

i) 60°

ii) x= 36°

iii) 85°

iv) 63°

v)

vi) 35°=x

Answer 2

Answer:

Here is your answer.

Step-by-step explanation:

i) As we know,

60+x=180(Linear angle)

x=120°

ii)We know,

2x+3x=180(Linear pair)

5x=180

x=36°

Then the angles are 2x=72°

3x=108°

iii)We have,

35+60+x=180

95+x=180

x=85°

iv)We know,

83+92+75+47+x=360(All angles)

x+297=360

x=63°

v)We have,

2x+x+2x+3x=360(All angles)

8x=360

x=45°

Then he angles are x=45, 2x=90, 3x=135.

vi)We have,

Firstly,

105+a=180

a=75

And,b=a

So, b=75

Then, 105+a+x+b=360(All angles)

105+75+75+x=360

x=105

Hope it helps you!!