What is the ABC triangle if its angles are 2: 4: 6?

A 2: 4: 6 ratio is equivalent to a 2x: 4x: 6x ratio, where x is the degree measure of one part of the angle. The sum of the angles of the triangle is 180 degrees.
2x + 4x + 6x = 180 g.;
12x = 180 gr.;
x = 15 gr.;
2x = 30 gr., 4x = 60 gr., 6x = 90 gr.
Answer: The triangle in question is right-angled, since one of the corners is 90 degrees.