Maths Key Words and Definitions 0.0 / 5 ? MathematicsKey words and definitionsGCSENone Created by: Clarisa TredouxCreated on: 18-05-16 14:31 opposite angles in a cyclic quadrilateral ADD UP TO 180 INTERGER = all positive and negative numbers 1 of 9 MEAN = another word for average MODE = number that occurs the most often in a list 2 of 9 RECIPROCAL = 1 over something 1/? Pythagorus = a2 + b2 = c2 (2=squared) 3 of 9 area of a sphere = pie x r squared curved surface area of a cylinder = 2 x pie x r x height 4 of 9 area of a right anle triangle = 1/2 (base x height) surface area of a sphere = 4 x pie x r squared 5 of 9 The 'and' rule in probability = TIMES The 'or' rule in probability - ADD 6 of 9 SOH-CAH-TOA = (sin) (cos) (tan) Corresponding angles are equal - these are angles in a letter F 7 of 9 Alternate angles are equal - these are angles in a letter Z Supplementary angles add up to 180° - these are angles in a letter 'U' or 'C' (when the 'U' and the 'C' are made of three straight sides, of course 8 of 9 Vertically opposite angles are equal. (This is when two straight lines cross) angles on a tangent = 90 degrees 9 of 9
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