Question

2 angles are in the ratio 4:5. find the angles.
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class 9 maths ch lines and angles​

Answer 1

Step-by-step explanation:

4x + 5x = 180

9x = 180

x = 20

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Answer 2

Answer:

Let two angles be 4x and 5x

Sum of supplementary angles is 180

4x+5x=180

9x=180

X=180/9

X=20

angle1=4x20=80

angle2=5x20=100