If one angle of a triangle is equal to the sum of other two, show that the triangle is a right triangle.
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Step-by-step explanation:
angles are a,b,a+b
here
a+b+a+b =180 (sum of angles of triangle is 180)
2(a+b)=180
a+b=90
so,one angle is 90°,it is a right angle triangle.
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