semidarkchoclate
semidarkchoclate semidarkchoclate
  • 21-05-2021
  • Mathematics
contestada

Please help me with the attachment below

Please help me with the attachment below class=

Respuesta :

yohi66 yohi66
  • 21-05-2021
a = 70 (vert. opp. angles)
a+b+90 = 180 (adj. angles on st.line)
70+b+90 = 180
b = 180-90-70
b = 20
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