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Alenkinab [10]
2 years ago
14

Can anyone help me pls?

Mathematics
2 answers:
amm18122 years ago
8 0

Basic fact:

<em>angles on a straight line always add up to </em><em>180</em><em> degrees</em>

Step-by-step explanation:

  1. 39+a=180       a=141
  2. 157+a=180      a=23
  3. 92+a=180       a=88
  4. 60+a=180       a=120
  5. 61+a=180        a=119
  6. 28+a=180       a=152
  7. 52+a=180       a=128
  8. 121+a=180       a=59
  9. 151+a=180       a=29
  10. 128+a=180      a=52
Kryger [21]2 years ago
7 0

Answer:

in every question you should subtract the given value by 180

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