Question

If the angles of a triangle are in the ratio 1:4:5, find the angles.

Answer 1

1st angle = 18°
2nd angle = 72°
3rd angle = 90°

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Answer 2

Hey there!

Angle Sum property : Sum of angles in a triangle = 180° .

Ratio of angles = 1 : 4 : 5

So, The angles be x , 4x , 5x .

x + 4x + 5x = 180

10 x = 180

x = 180/10 = 18 .

So the angles are,

x = 18

4x = 72

5x = 90 .

So, The angles are 18 , 72 , 90