Are Right Triangles Irregular Polygons?
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A right triangle or right-angled triangle is a triangle in which one angle is a right angle. The relation between the sides and angles of a right triangle is the basis for trigonometry. The side opposite the right angle is called the hypotenuse. The sides adjacent to the right angle are called legs. Side a may be identified as the side adjacent to angle B and opposed to angle A, while side b is the side adjacent to angle A and opposed to angle B. If the lengths of all three sides of a right tria