If line l is parallel to m and ∠1 = (2x +20) degree and ∠6 = (x +4

1.	If line l is parallel to m and ∠1 = (2x +20) degree and ∠6 = (x +40) degree find ∠4 and ∠7
Answer» Answer: angle 1 = angle 3 .....vertically opposite angles angle 3 + angle 6 = 180 .... CO- interior angles 2x+20 + (x+40)= 80 3x+ 60= 180 3x= 180-60 x= 120/3 = 40 angle 6 = 40+40= 80 angle 7+ angle 6= 180 .....linear pair angle 7+ 80= 180 angle 7 = 100

If line l is parallel to m and ∠1 = (2x +20) degree and ∠6 = (x +40) degree find ∠4 and ∠7

Answer»

Answer:

angle 1 = angle 3 .....vertically opposite angles

angle 3 + angle 6 = 180 .... CO- interior angles

2x+20 + (x+40)= 80

3x+ 60= 180

3x= 180-60

x= 120/3 = 40

angle 6 = 40+40= 80

angle 7+ angle 6= 180 .....linear pair

angle 7+ 80= 180

angle 7 = 100

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If line l is parallel to m and ∠1 = (2x +20) degree and ∠6 = (x +40) degree find ∠4 and ∠7

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