2 answers:
Answer:
77°+ 23°+angle b=180°[by angle sum property]
100°+angle b=180°
angle b=180°-100°
angle b=80°
Answer:
80
Step-by-step explanation:
All the angles of a triangle should add up to 180. So, 180 - 77 is 103. 103 - 23 is 80. The answer is 80.
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