Question

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

Answer 1

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

Answer 2

Answer:

7 is 100 and 4 is 80. this is write meet.google.com/qvg-nzcj-qzb