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Let the common ratio be x°
2x°+3x°+4x°=180°(sum of all the angles of a triangle)
9x=180
x=180/9
x=20
2x=2×20=40°
3x=3×20=60°
4x=4×20=80°(largest angle)
2x°+3x°+4x°=180°(sum of all the angles of a triangle)
9x=180
x=180/9
x=20
2x=2×20=40°
3x=3×20=60°
4x=4×20=80°(largest angle)
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