Question

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Answer 1

i.) c= 50,b.)=130 a.)=20

Answer 2

Step-by-step explanation:

angle c= 180° -(70+60). { angle sum property}

c= 180- 130

c=50

angle a = 180-(90+70). { angle sum property}

a= 20

angle b= 180-(30+20). { angle sum property}

b= 130

second part

angle a = 180-(60+55). { angle sum property}.

a = 180- 115

a = 65

angle b = 180-65 { linear pair}

b= 115

c=180 -(115+40). { angle sum property}

c= 180- 155

c = 25