Can a triangle have 2 or 3 right angles on a plane, straight surface.

Answer: B. NO

No, a triangle cannot have two or three right angles in the same triangle as it would form two parallel lines which are connecting to each other by a horizontal line connecting them or it would form a quadrilateral if we use three right angles in the triangle. However triangle with three right angles can be formed on a curved surface such as on the sphere.

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