Question

prove that if one angle of a triangle is equal to sum of other 2 angles, the triangle is right angled triangle​

Answer 1

Hello!!!

As you know that the sum of the angles of a triangle is equal to 180 degrees
So,
If we take one angle as x which is equal to the sum of other two angles that are 1 and 2 so our statement would be-

x=1+2

We also know their sum that is
x+1+2=180

So by looking at this we can simply figure out that the no is 90 because x is equal to the half of the sum that is 180
So, half of the sum is x . Half of the sum is 90 so value of x is 90

I hope it will help

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