Please solve question 7 part b,c
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7b
x+45°+60°=180°
x=180°-105°
x=75°
x+y=180° (linear pair)
y=180°-75°=105°
40°+y+z=180°
z=180°-145°=35°
7c
y=20°{vertical opposite angle u=v}
u=v=180°-20°=160°
90°+x+20°=180°
x=180°-110°=70°
x+45°+60°=180°
x=180°-105°
x=75°
x+y=180° (linear pair)
y=180°-75°=105°
40°+y+z=180°
z=180°-145°=35°
7c
y=20°{vertical opposite angle u=v}
u=v=180°-20°=160°
90°+x+20°=180°
x=180°-110°=70°
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