Page 3 - 1202 Question Bank Mathematics Form 5

MUST

KNOW Important Definitions

Congruency and Enlargement Class Interval and Cumulative Frequency
• The pairs of objects are congruent when the two objects have the • Class interval is the range of a division of data.
same size and shape even though their position or arrangement is
different. • The cumulative frequency of a class interval is the sum
of the frequency of the class and the total frequency of the
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• Enlargement is a transformation in which all the points of an classes before it.
object move from a fixed point with a constant ratio is known as
the scale factor.

Important Definitions (Chapter 5) 13 @ Pan Asia Publications Sdn. Bhd. Important Definitions (Chapter 7) 19 @ Pan Asia Publications Sdn. Bhd.

Combined Transformation and Tessellation Quartile, Interquartile Range and Percentile
• Combined transformation AB means transformation B • Quartiles are values that divide a set of data into four equal
followed by transformation A. parts.

• A tessellation is a pattern of recurring shapes that fills a • Interquartile range is the difference between the value of
plane without leaving empty spaces or overlapping. third quartile and the value of first quartile.
• A percentile is a value that divides a set of data into 100
equal parts.

Important Definitions (Chapter 5) 15 @ Pan Asia Publications Sdn. Bhd. Important Definitions (Chapter 7) 21 @ Pan Asia Publications Sdn. Bhd.

Unit Circle and Corresponding Reference Angle Mathematical Model, Variables, Optimum and
Simple Interest
• A unit circle is a circle that has a radius of 1 unit and is
centred on the origin. • A mathematical model is a representation of a system or
scenario that is used to gain qualitative and/or quantitative
• The corresponding reference angle, a is always less than understanding of some real-world problems and to predict
90°. future behaviour.

• The process of constructing mathematical model is called
mathematical modeling.
• A variable is a quantity with an unknown value.
• Optimum means the best or the most profitable.
• Simple interest is a reward given to the depositor at a
certain rate on the principal amount for a certain period of
time.

Important Definitions (Chapter 6) 17 @ Pan Asia Publications Sdn. Bhd. Important Definitions (Chapter 8) 23 @ Pan Asia Publications Sdn. Bhd.

Must Know 1202BS Maths F5.indd 3 21/01/2022 4:16 PM