4. *)CAB = 180-118 = 62
*)BCA = 180-(62+63) = 55
*)63+62+5n+6n=180
11n=55
n=5
*)D = 6n = 6(5) = 30
*)CAD = 62+5n = 62+5(5)=62+25=87
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4. *)CAB = 180-118 = 62
*)BCA = 180-(62+63) = 55
*)63+62+5n+6n=180
11n=55
n=5
*)D = 6n = 6(5) = 30
*)CAD = 62+5n = 62+5(5)=62+25=87