Hypotentuse - Longest side of a right angle triangle, Adjacent - Side of triangle beside the reference angle, Opposite - The side of a triangle opposite the reference angle, Pythagoras' Theorem - c2 = a2 + b2, Acute - Angle smaller than 90 degrees, Obtuse - Angle greater than 90 and less than 180 degrees, Reflex - Angle greater than 180 and less than 360 degrees, Sin - Opposite ➗ Hypotentuse, Cos - Adjacent ➗Hypotenuse, Tan - Opposite ➗Adjacent, Straight - 180 degree angle, Revolution - 360 degrees, Angle of elevation - Angle between horizontal and upward line of sight, Angle of depression - Angle between horizontal and line of sight downward, Trigonometry - The study of triangles, Reference angle - The angle provided in a triangle problem, Inverse operation - Doing the opposite of a given operation, km, m, cm, mm - Units of length,

Term 2 - Triangle Terminology

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