Question

in an obtuse angles isosceles triangle the ratio of two sides are in the ratio 1:7 find the three angles of that triangle​

Answer 1

Answer:

hello friend,

The required three angle of the given obtuse isosceles triangle will be

140° , 20° and 20°

Thank you !!

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Answer 2

The three angles of that triangle​ are "20°, 20° and 140°".

Step-by-step explanation:

Given,

The ratio of two angles are in the ratio 1 : 7.

Let the three angles of that triangle = x, x and 7x

We know that,

The sum of the angles of triangle = 180°

⇒ x + x + 7x = 180°

⇒ 9x = 180°

⇒ x = $\dfrac{180}{9} =$20°

∴ 7x = 7 × 20° = 140°

Hence, the three angles of that triangle​ are 20°, 20° and 140°.