Question

One angle of a triangle is equal to the sum of two other angles. Find the angle. How will
classify this triangle? (Acute triangle, right triangle or obtuse triangle).
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Answer 1

$\large\fcolorbox{red}{cyan}{Right\:Triangle}$

Step-by-step explanation:

Let The Angles Be 'x' , 'y' , and 'x+y' :-

As per Question :-

$(x )+ (y )+ (x + y) = 180 \\ = > x + y + x + y = 180 \\ = > 2(x + y) = 180 \\ = > x + y = \frac{180}{2} \\ = > x + y = 90$

Since The Sum Of Other Two Angles (i.e 3rd Angle) is 90° . Therefore The Triangle is Right Triangle