Question

The angle of a triangle are in the ratio 5 : 3 : 7, the triangle is
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Answer 1

Answer:

let the ratio be 5x, 3x,7x

sum of angles in a triangle = 180°

5x + 3x + 7x = 180°

15x = 180°

x = 180/15

x = 12°

so,

first angle = 5×12 = 60°

second angle = 3×12 = 36°

third angle = 7×12 = 84°

these all angles are less than 90°.

hence, the triangle is an acute angle .

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Answer 2

Answer:

the triangle is an acute angled triangle