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Verizon [17]
3 years ago
13

Find the missing angle

Mathematics
1 answer:
coldgirl [10]3 years ago
6 0

Answer:

measure of missing angle is 80°

Step-by-step explanation:

let the missing angle be x,

sum of all angles of a triangle is 180°

  • 80° + 20° + x = 180°
  • 100° + x = 180°
  • x = 180° - 100°
  • x = 80°
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