Question

solved question I will make brain list
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Answer 1

Answer:

no 28, 29 are in the photo

Step-by-step explanation:

30. let the angles be 2x, 3x and 4x

2x+3x+4x=180°

9x=180

x=180/9

x=20

therefore the angles are 2x= 2×20=40

3x=3×20=60

4x= 4×20=80