Chapter 4 Basic GeometryChapter 4 Basic GeometryPAGE 112PAGE 111 PAGE 7615.AIn ?ABC (∠sum of △)
Chapter 4 Basic GeometryChapter 4 Basic GeometryPAGE 112PAGE 111 PAGE 7617.Da b c = 180°(∠sum of △)d e f = 180°(∠sum of △)∴a b c= d e fa ? f= d e ? b ? ca ? f= (d ? c) (e ? b)
Chapter 2 Basic AlgebraChapter 2 Basic AlgebraPAGE 48PAGE 47 PAGE 2515.Given the formula . If b = 8 c = 4 and d = 1 find the value of a.A.45B.30C.60D.15
Chapter 4 Basic GeometryChapter 4 Basic GeometryPAGE 112PAGE 111 PAGE 7628.A∵All faces of a polyhedron are plane.∴A is not a polyhedron.
Chapter 4 Basic GeometryChapter 4 Basic GeometryPAGE 112PAGE 111 PAGE 7625.(a)x 30?= 90?x= 90? ? 30?= (b)In ?ABD53? 90? y= 180? (∠sum of △)143? y= 180?y= 180? ? 143?= (c)In ?ACD 30?
Chapter 4 Identities and FactorizationChapter 4 Identities and FactorizationPAGE 88PAGE 87 PAGE 7014.D(?ab ? c)2? [?(ab c)]2? (?1)2(ab c)2? a2b2 2abc c2or (?ab ? c)2? (?ab)2 ? 2(?ab)(c)
Chapter 4 Basic GeometryChapter 4 Basic GeometryPAGE 112PAGE 111 PAGE 762.C∵1plete turn = 360°∴plete turns
Chapter 7 Areas and Volumes of Simple FiguresChapter 7 Areas and Volumes of Simple FiguresPAGE 10PAGE 9 PAGE 125.DVolume of the cargo container
Chapter 9 Symmetry and TransformationChapter 9 Symmetry and TransformationPAGE 98PAGE 97 PAGE 6412.A∵The figure has 2 axes of symmetry.∴It has reflectional symmetry.Also the figure coinci
Chapter 9 Symmetry and TransformationChapter 9 Symmetry and TransformationPAGE 66PAGE 67 PAGE 6410.A∵The figure coincides itself by rotating 180°.∴It coincides itself for 1plete revo
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