Respuesta :

Answer:

see explanation

Step-by-step explanation:

a and b lie on the straight line CA, hence

and b sum to 180°, that is supplementary angles

Answer:

a and b lie on the straight line CA, so a and b sum to 180°, that is supplementary angles

is it  

A) vertical angles  

B) Complementary angles

C)Supplementary angles

D) none of the above  

Step-by-step explanation:

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