Find the measure of ∠b.



A. 110∘
B. 102∘
C. 111∘
D. 121∘
Answer
5 (2 оценки)
2
SkiQueen 7 months ago
Светило науки - 461 ответа - 0 помощи

Answer:

110 :)

Step-by-step explanation:

Triangle total angle measurement: 180

Now lets solve!

28 + 42 + ? = 180

70 + ? = 180

Now we have to subtract!!

180 - 70 = 110

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Answer
5 (1 оценка)
2
devishri1977 7 months ago
Светило науки - 1142 ответа - 0 помощи
Sum of all angles of triangle =180


28 + 42 + ∠b = 180
70 + ∠b = 180
∠b = 180 - 70
∠b = 110

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