. If one angle of a triangle is the sum of the other two angles, then the triangle is Question . If one angle of a triangle is the sum of the other two angles, then the triangle is in progress 0 Math Kylie 1 month 2021-08-18T14:30:27+00:00 2021-08-18T14:30:27+00:00 2 Answers 0 views 0

## Answers ( )

Step-by-step explanation:in triangle ABC,

angleA + angleC= angleB …………(1)

Now, in triangle

angle A +angle B+ angle C =180°

= angle B + ( angleA + angleC) =180°

= angleB + angleB =180°…………..from(1)

=2 angleB = 180°

= angle B = 180°/2

=angleB= 90°

So, one angle of triangleABC is 90° or if one angle of triangle is 90° this triangle is known as right angled triangle.

Step-by-step explanation:it is a right angle triangle.

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