A right triangle has three vertices.
In geometry, a triangle is defined as a polygon with three edges and three vertices. A right triangle specifically has one angle that measures 90 degrees, which is known as the right angle. The vertices of a right triangle are typically labeled as points A, B, and C, where each vertex corresponds to a corner of the triangle. Therefore, regardless of the type of triangle—be it right, acute, or obtuse—the number of vertices remains constant at three.