4
Unit
GEOMETRY
In this topic, pupils will learn to apply their skills and concepts to analyse mathematical situations, make connections among mathematical ideas and express them logically in the following areas: • Perpendicular and parallel lines • Angles: right angles, angles on a straight line, vertically opposite angles and angles at a point • Properties of a square, a rectangle, a triangle, a parallelogram, a rhombus and a trapezium • 8-point compass
Numbers that make sense Read each problem. Then, place the numbers from the box into the blanks where you think they fit best. Read the problem again and see if the numbers make sense. 1
58
60
62
∠a is smaller than ∠b . ∠a = ∠b =
°, ∠c =
∠d =
°.
°, ° and
How would you check that the numbers are in the correct places? Write a short explanation below.
Mathematics Problems…
SOLVED!
d
a
56
118
Book C
c b
Hint ∠d is equal to the sum of which two angles ?