Question

If one angle of a triangle is equal to the some of the other two, show that the triangle is right-angled. ​

Answer 1

Step-by-step explanation:

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Answer 2

So look one angle is equal 90° and the other two angles are equal

Let's take 90°=X and the other two angles as=y

So X+2y = 180

90°+2y =180°

Y= 180°-90/2
So it will be 90°/2

So y=45