Cambridge International Mathematics

Algebra (Equations and inequalities) (Chapter 3) 89 EXERCISE 3F 1 Represent the following inequalities on a number line: a x> ...

90 Algebra (Equations and inequalities) (Chapter 3) Example 20 Self Tutor Solve forxand graph the solutions: a 3 x¡ 462 b 3 ¡ 2 ...

Algebra (Equations and inequalities) (Chapter 3) 91 Example 22 Self Tutor Solve forxand graph the solutions: 3 ¡ 5 x> 2 x+7 3 ...

92 Algebra (Equations and inequalities) (Chapter 3) 4 Solve forx: a 7 x¡5=4(x+4) b x 2 +2x= 3 x¡ 1 4 5 Represent the following i ...

Lines, angles and polygons 4 Contents: A Angle properties [4.4] B Triangles [4.4] C Isosceles triangles [4.4] D The interior ang ...

94 Lines, angles and polygons (Chapter 4) ² Two angles which have the same vertex and share a common arm are calledadjacent angl ...

Lines, angles and polygons (Chapter 4) 95 Title Figure Co-interior angles (also called allied angles) When two parallel lines ar ...

96 Lines, angles and polygons (Chapter 4) EXERCISE 4A 1 Use the figure illustrated to answer the following questions: AB is a fi ...

Lines, angles and polygons (Chapter 4) 97 stu 3 Find, giving brief reasons, the value of the unknown in: abc de f gh i 4 State w ...

98 Lines, angles and polygons (Chapter 4) Atriangleis a polygon which has three sides. All triangles have the following properti ...

Lines, angles and polygons (Chapter 4) 99 a 2 x+x+(x+ 20) = 180 ) 4 x+ 20 = 180 ) 4 x= 160 ) x=40 fangles of a triangleg b a= 18 ...

100 Lines, angles and polygons (Chapter 4) 3 State whether the following statements aretrueorfalse: a The sum of the angles of a ...

Lines, angles and polygons (Chapter 4) 101 PROPERTIES The following properties are associated with the isosceles triangle theore ...

102 Lines, angles and polygons (Chapter 4) EXERCISE 4C 1 Findx, giving reasons: abc de f 2 Findx, giving brief reasons: abc 3 Cl ...

Lines, angles and polygons (Chapter 4) 103 5 Because of its symmetry, a regular pentagon can be constructed from five isosceles ...

104 Lines, angles and polygons (Chapter 4) You should have discovered that: The sum of the interior angles of anyn-sided polygon ...

x° x° x° x° x° x° x° x° 2 x° 2 x° 2 x° 4 x° x° x° 2 x° x° x° x° x° 60 ° Lines, angles and polygons (Chapter 4) 105 de f 4 A pent ...

106 Lines, angles and polygons (Chapter 4) 13 Atessellationis a pattern made with a number of objects of the same shape and size ...

Lines, angles and polygons (Chapter 4) 107 The sum of the exterior angles of any polygon is always 360 o. This fact is useful fo ...

108 Lines, angles and polygons (Chapter 4) de 3 Decide if the figure contains parallel lines, giving a brief reason for your ans ...