Question

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

Answer 1

$\huge\color{Lime}{Answer}$

Let the angles of a triangle x:4x:5x

⇒x+4x+5x=180

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by angle sum property of a triangle.

⇒10x=180

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∴x=

10

180

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=18

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Hence x=18

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4x=4×18

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=72

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and 5x=5×18

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=90

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The angles are 18

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,72

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and 90

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Answer 2

Step-by-step explanation:

Let, the Angel's pf triangle be 1x , 4x and 5x

.: 1x + 4x + 5x = 180° ( Angle sum property of triangle)

10x = 180

x = 180 / 10

x = 18.

1x = 1 × 18 = 18 °

4x = 4 × 18 = 72°

5x = 5 × 18 = 90°