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Answer:
x°=110°-80° ( exterior angle property)
x°=30°
Step-by-step explanation:
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Answered by
0
Answer:
x=30
Step-by-step explanation:
in triangle ABC
ABD is line angle B=180-110=70
angle B=70
sum of measurement of triangle
80+70+x=180
150+x=180
x=180-150
x=30
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