Question

If angle a + angle c=120°,angle b+ angle c=140° and angle a+ angle b=100°,then what is angle a,angle b and angle c

Answer 1

Answer:

a=40°,b=60°,c=80°

Step-by-step explanation:

a+b = 100°

b+c=140°

c-a=40°

a+c=120°

2c=160°

c=80°

get a using a+c and b using b+c

Answer 2

Answer:

a=40°,b=60°,c=80°

Step-by-step explanation:

a+b = 100°

b+c=140°

b is same

c-a=40°

a+c=120°

a is same

2c=160°

c=80

b+c=140°

140°-80° =60°

b= 60°

a+b= 100°

100°-60°=40°

a=40°

a+ b=100°

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