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(C) Let the angles of $	riangle ABC$ be $\angle A, \angle B,$ and $\angle C$.Given that $\angle A = \angle B + \angle C$ ...... $(1)$In any $	riangl

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a right triangle

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(C) Let the angles of $	riangle ABC$ be $\angle A, \angle B,$ and $\angle C$.Given that $\angle A = \angle B + \angle C$ ...... $(1)$In any $	riangle ABC$,the sum of all interior angles is $180^{\circ}$,so $\angle A + \angle B + \angle C = 180^{\circ}$ ...... $(2)$[Angle sum property of a triangle]Substituting equation $(1)$ into equation $(2)$,we get:$\angle A + (\angle B + \angle C) = 180^{\circ}$$\angle A + \angle A = 180^{\circ}$$2\angle A = 180^{\circ}$$\angle A = 90^{\circ}$Since one angle is $90^{\circ}$,the triangle is a right triangle.

If one angle of a triangle is equal to the sum of the other two angles,then the triangle is

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