A Level Maths Vocabulary Certification Exam Example Questions.

Acute angle - correct answer An angle less than 90°. Adjacent - correct answer Adjacent sides are next to each other and are joined by a common vertex. Algebra - correct answer Algebra is the branch of mathematics where symbols or letters are used to represent numbers. Angle - correct answer An angle is formed when two straight lines cross or meet each other at a point. The size of an angle is measured by the amount one line has been turned in relation to the other. Approximate - correct answer An approximate value is a value that is close to the actual value of a number. Arc - correct answer Part of a circumference of a circle. Area - correct answer The amount of space a shape takes up. E.g. the area of the lawn is 35 square metres. Asymmetrical - correct answer A shape which has no lines of symmetry. Average - correct answer A value to best represent a set of data. There are three types of average - the mean, the median and the mode. Axis - correct answer An axis is one of the lines used to locate a point in a coordinate system. Bearing - correct answer A three digit angle measured from north in a clockwise direction. BIDMAS - correct answer A way of remembering the order in which operations are carried out. It stands for Brackets - Indices - Division - Multiplication - Addition - Subtraction. Bisect - correct answer To divide an angle or shape exactly in half. Brackets - correct answer Used to determine the order in which operations are carried out. For example, 3 + 4 x 2 = 11 but (3 + 4) x 2 = 14. Calculate - correct answer To work out the value of something. This does not have to mean you need a calculator! Centilitre (cl) - correct answer A measure of volume. 100 centilitres = 1 litre (100 cl = 1 l). 1 centilitre = 10 millilitres (1 cl = 10 ml). Centimetre (cm) - correct answer A measure of distance. 1 centimetre = 10 millimetres. (1 cm = 10 mm). 100 centimetres = 1 metre. (100 cm = 1 m). Chord - correct answer A straight line drawn from one point on the edge of a circle to another. Circumference - correct answer The perimeter of a circle. Coefficient - correct answer The number in front of an algebraic symbol. For example the coefficient of 5x is 5. Congruent - correct answer If you can place a shape exactly on top of another then they are said to be congruent. You may rotate, reflex or translate the shape. Constant - correct answer A letter or symbol whose value always stays the same. The constant Π is a common example. Credit - correct answer To add money to a bank account. For example, I had £500 credited to my bank account. Cross section - correct answer The end section created when you slice a 3D shape along it's length. Cube number - correct answer The product when an integer is multiplied by itself twice. For example 5 cubed = 5 x 5 x 5 = 125. Cuboid - correct answer A 3D shape with all sides made from rectangles. Cumulative frequency - correct answer A running total of the frequencies, added up as you go along. Day - correct answer A time period of 24 hours. There are 7 days in a week. Debit - correct answer To take out money from a bank account. For example, £400 was debited from my account. Decagon - correct answer A ten sided polygon. Decimal - correct answer Not a whole number or integer. For example, 3.6 or 0.235. Decrease - correct answer To make an amount smaller. Denominator - correct answer The bottom part of a fraction. Diameter - correct answer The distance across a circle which passes through the centre. Difference - correct answer Subtract the smaller value from the larger value to find the difference between two numbers. Distance - correct answer How far away an object is. For example, it is a distance of 3 miles to the city centre. Distribution - correct answer How data is shared or spread out. Equal - correct answer Used to show two quantities have the same value. Equation - correct answer Two expressions which have the same value, separated by an '=' sign. E.g. 3y = 9 + y Equilateral triangle - correct answer A triangle with all sides and angles the same size.