find the unknown angles in the following figures
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angle c= 180-140=40
angle b= 180-(40+90)
=180-130
=50
angle b= 180-(40+90)
=180-130
=50
Elwin123:
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Angle c= 180-140=40
Angle b = 180-(40+90)=180-130=50
Angle a= 90
Angle b = 180-(40+90)=180-130=50
Angle a= 90
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