MATH FIGURES are terms used to describe various mathematical concepts. The term SINES (5 letters) refers to the trigonometric function that describes the ratio of the side opposite a given angle in a right triangle to the hypotenuse. SLOPES (6 letters) is a term used to describe the steepness of a line, which is determined by the ratio of the vertical change to the horizontal change between two points on a line. RATIOS (6 letters) is a term used to describe the relationship between two numbers or quantities, which is expressed as a fraction.