The image shows an isosceles triangle RSC, where the angles at vertices R and C are equal. The line segment SK is perpendicular to the base RC, as indicated by the right angle symbol at K, making it an altitude. Since the triangle is isosceles, this altitude also bisects the base RC and the angle at S. The text 'N/3.' in the corner is likely a problem number or a label and does not directly pertain to the geometric properties of the figure itself.
Answer: Isosceles triangle