Leaving Certificate Mathematics Definitions Practice Test

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• Data collected from a sample to estimate attributes of the entire population is called what?
• Which angle is formed outside a triangle when one side is extended?
• Data that can be counted or measured is called
• In triangle congruence, the HL criterion specifies congruence based on which parts of a right-angled triangle?
• An angle that measures between 90 and 180 degrees is called an obtuse angle.
• In which study is a treatment applied and the effects observed?
• Which term also describes a size-changing transformation that preserves the similarity of the image?
• The top, little number in an exponent that tells how many times the base is multiplied is the
• Which transformation reflects a figure through a point?
• A line that intersects two or more lines is called a?
• Data already available and not collected by the researcher directly themselves is called
• Which term describes a transformation that changes the size of a figure and preserves its shape, with the image similar to the original?
• Which of the following is not a continuous numerical data example?
• Which type of angle measures exactly 180 degrees?
• Alternate angles are defined as angles that are on opposite sides of the transversal and between the intersected lines.
• Two angles that add up to 90 degrees
• Which is nominal categorical data?
• Which property is true for a rectangle but not necessarily for a rhombus?
• Which term refers to triangles that share equal corresponding angles and proportional sides in the same ratio?
• A parallelogram is a rhombus if and only if which condition holds?
• Which of the following are like terms in 4x^2 and 9x^2?
• Lines in the same plane that never intersect are called what?
• Which of the following are like terms?
• The center of the inscribed circle, equidistant from all sides of a triangle, is called what?
• Which option is not a type of transformation listed in the material?
• A numerical characteristic of interest in each element of the sample.
• Which of the following is an ordinal categorical data example?
• Angles that have the same measure
• A unit used to measure angles is called what?
• Data collected by the person who was going to use it is called
• Which of the following is an equation?
• Which of the following best describes a parallelogram that has all four sides equal?
• The data are described as having measurements of a single variable per subject; what is this data called?
• Which transformation reflects a figure through a line?
• Which variable is continuous numerical data?
• Which triangle congruence criterion uses two angles and the included side to prove triangles congruent?
• Which statement best defines continuous numerical data?
• Angles whose measure adds up to 180 degrees
• Which sampling method uses interviewers with quotas to fill and may lead to non-random samples?
• An angle that measures 180 degrees is called a straight angle.
• What is an equation?
• The point of concurrency of the three angle bisectors, equidistant from each side of the triangle, and the center of the incircle is called?
• Which example is nominal categorical data?
• Two lines that intersect to form right angles are known as?
• The statement 'P if and only if Q' expresses which kind of relationship?
• Which sampling method gives every member of the population an equal chance of being chosen?
• Angles in the same place on different lines cut by a transversal are equal if the lines are parallel. These are called?
• Which transformation moves a figure in a straight line without rotating it?
• The number in front of a variable that tells how many variables there are is the
• What is a four-sided figure called?
• Two sides of a triangle have equal length. This type of triangle is called
• Population is divided into subgroups based on similar characteristics and a simple random sample is drawn from each subgroup.
• Name the statement: If two sides of a triangle are equal, then the opposite angles are equal.
• A vertex is defined as
• The variable deliberately altered to observe its effect on the response variable is called
• Which angle measures 90 degrees?
• Which of the following shapes is defined by opposite sides being parallel and equal in length as a primary property?
• Data that cannot be counted, measured, or answered in numbers is called
• A proportion of the population is taken and then conclusions are made about the entire population.
• Interior angles on the same side of the transversal between parallel lines are called what?
• What term describes a statement that follows from a previous result?
• What is the discriminant of the quadratic ax^2 + bx + c?
• Very high or very low value not typical of the other values in the data set.
• What is the name of the proof that assumes a statement and then proves it wrong by using valid axioms?
• Which point is the intersection of the three medians of a triangle?
• Which type of proof involves assuming a statement and deriving a contradiction?
• A line that intersects two or more lines is called a transversal line.
• Which statement is an example of an axiom?
• Angles whose measure is greater than 0 degrees and less than 90 degrees are called?
• People who answer questionnaires are called
• Which term describes using previously proven results to deduce new statements?
• Two lines that never meet and stay the same distance apart are called
• Which term describes nonprobability sampling in which subjects are chosen in the most convenient way?
• Starting point is chosen at random and the sample is taken at regular intervals; for example, sample eight houses from 120.
• A set of questions designed to obtain information from a group of people is called
• Which transformation is described as reflecting a figure through a line?
• Which term describes the circle that passes through all three vertices of a triangle?
• A triangle with three equal sides and three equal angles of 60 degrees is called
• Which term refers to a number that never changes?
• If two triangles are congruent, what can be said about their areas?
• Which angles are formed by two lines crossing and are opposite each other?
• Having the same size and shape
• Which term is defined as the distance from zero on a number line, always positive?
• Which type of angle is greater than 90 degrees but less than 180 degrees?
• What is the reverse of a theorem?
• A triangle where all the angles are equal is called what?
• Lines that pass through the same intersection point
• Which term refers to data collection from a subset of the population to infer population characteristics?
• Which property is true for all parallelograms?
• The big bottom number in a fraction notation where it is the number being multiplied is called the
• Process by which data is transferred from a paper copy to an electric file.
• A point where two or more straight lines meet
• An angle that measures less than 90 degrees is called an acute angle.
• Which sampling method ensures every member of the population has an equal chance of selection and uses randomization without considering subgroups?
• Which term describes a sequence of logical steps used to prove a theorem?
• Two triangles that have the same shape but may differ in size are called what?
• A corollary is best described as which of the following?
• Which of the following is a continuous numerical data set?
• Interior angles on the alternate sides of the transversal are equal if the lines are parallel. These are called?
• Two quantities that have the same measure or correspond to each other are said to be what?
• Which term describes the data set that includes every observation's value for the variable?
• Lines in the same plane that never intersect are called?
• Which description matches nominal data?
• Which of the following is a quadratic polynomial in x?
• Value of the variable for one particular element of the sample.
• Which term is defined as a number left in square root form?
• Which of the following terms describes a size-changing transformation that can resize figures either up or down while preserving their shape?
• What term describes a letter used to denote an unknown quantity in an equation?
• In 3x + 4, the number in front of x is called the
• Which statement is the Converse of the isosceles triangle theorem?
• Which example is ordinal categorical data?
• Data that are numerical measurements like height or weight are called
• In an expression like 7x^5, which term is the exponent?
• Which statement matches ordinal data?
• Which study observes behaviour without applying any treatment?
• If you summarize data using measures like mean and standard deviation, you are applying which type of statistics?
• Which term describes a four-sided figure that touches a circle at its corner points?
• Which expression demonstrates the distributive property?
• Which term refers to the use of graphs, tables, and charts to organize and summarize data?
• To replace a variable with an algebraic expression with a known value is to
• Angles opposite one another at the intersection of two lines are called
• An angle greater than 180 degrees but less than 360 degrees is called a reflex angle.
• Which of the following is ordinal categorical data?
• Only one piece of information is collected from each member of the group.
• In an isosceles triangle, what can be said about the base angles?
• Which pair correctly matches a data type to an example?
• Two items of information are collected from each member of the group.
• An exterior angle of a triangle equals the sum of which interior angles?
• Angles that have the same measure are called
• Which of the following is a surd according to the definition 'a number left in square root form'?
• A number whose value never changes is called a
• The term for a line that cuts across two lines in a plane is called what?
• Selection of the sample is made by interviewer who has quotas to fill.
• Which statement best describes a rhombus?
• Data that consists of words or categories rather than numbers is called
• The point of concurrency of the three perpendicular bisectors, equidistant from each vertex of the triangle and the centre of the circumcircle is called what?
• When a data record contains only a single measurement per observation, this data is classified as what?
• Which circle has the three sides of a triangle as tangents?
• Nominal data is best described as:
• Which of the following is a polynomial?
• A triangle with two equal sides and two equal angles.
• What is the term for a series of logical steps used to prove a theorem?
• A four-sided polygon with both pairs of opposite sides parallel is called
• How many degrees are in a full circle?
• An exterior angle of a triangle equals the sum of which interior angles?
• The center of the circle that passes through all vertices of a triangle is called what?
• Lines that intersect at 90 degrees
• Angles opposite one another at the intersection of two lines. They are congruent (the same size).
• Angles occupying the same relative position where a transversal crosses two lines; If the two lines are parallel, they are equal.
• Opposite angles formed when two lines cross and they are equal.
• Group against which the effects of something are measured; for example in a drug study this group would receive an inactive substance called the placebo
• A letter representing an unknown value is called a
• Value of all observations of a variable for the elements of a sample.
• If two angles in a triangle were both 90 degrees, what would the third angle be?
• What term describes a rule or statement accepted without proof?
• Population divided into clusters and a cluster is chosen at random.
• Which is the reverse of a theorem?
• What is the result after applying the distributive property to 3(2x - 4)?
• Which term describes triangles that have equal corresponding angles and proportional corresponding sides?
• The variable whose changes we wish to study is called
• Which sampling method divides the population into subgroups and draws random samples from each subgroup?
• A four-sided figure whose vertices lie on a circle is called what?
• In the expression a^b, which symbol represents the base?
• Which word describes a combination of constants, variables and coefficients like 32x + 56?
• Which statement is an example of a mathematical theorem?
• The controlled variable whose effects on the response variable we wish to study is called
• Which shape has all four equal sides?
• Possible values are isolated points along a number line (e.g. shoe size, age in years) are described as
• Which data type best describes grades on a scale A through F?
• The discriminant of a quadratic equation is b^2 - 4ac. What does it tell us about the roots?
• What is the point of concurrency of the three altitudes of a triangle?
• The term for the numeric value of the variable for a single element in the sample.
• Angles that lie inside the parallel lines on the same side of the transversal are called?
• From a + b = 15, which expression solves for a in terms of b?
• If a variable is continuous numerical data, which statement is true?
• Which of the following is a property of a square that is also true for a rectangle?
• If a transversal intersects parallel lines, which pair of angles are equal and lie on alternate interior positions?
• The group used for baseline comparison and not given the active treatment is called
• Data that researchers collect first-hand for a study is called
• If three sides of two triangles are equal, what can be concluded?