Answer:
[tex]m(DAB)=228^o[/tex]
[tex]m[/tex]∠[tex]BCD=48^o[/tex]
[tex]m[/tex]∠[tex]ABC=123^o[/tex]
Step-by-step explanation:
[tex]Given:[/tex]
m∠BAD=66°
m BD =2(m∠BAD)
= 2(66)
m BD=132°
m DAB= 360° - 132°
m(DAB) = 228°
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m∠BCD= 1/2(m DAB -m BD)
= 1/2(228- 132)
m∠BCD= 48°
-------------------
m∠ABC= 360-(66+48)/2
= 360 -114/2 = 246/2
m∠ABC=123°
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hope it helps...
have a great day!!
