Question

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Answer 1

Answer:

right angled isosceles triangle

Solution

Angles are in ratio 1:2:1

sum of interior angle of triangle = 180

x+2x+x = 180

x = 45

And hence the angles are 45, 90 and 45

Since one of the angle is 90 , it is right angled triangle

Since two angles are equal, two sides are equal, Hence it is isosceles triangle.

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Answer 2

Answer:

Let the angles be x°, 2x° & x°.

According to the question,

x° + 2x° + x° = 180°

4x° = 180°

x° = $(\frac{180}{4})$°

x° = 45°

Therefore; the angles are 45°, 90° & 45°

So, in one way,

Two angles of the triangle are equal, so it is an isosceles triangle.

Also, in another way, it is not an isosceles triangle, but also has a right angle(90°)

So, it is also a right-angled triangle.

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