Teacher's Guide - Pearson

Activity 11.4 (Student’s Book page 197)1. a) Reflection x 5 0 or y-axis and translation ( ​ ​0211 ​ )b) Cʹ(0;–4)2. Reflection in the y-axis or the line x 5 0Exercise 11.4 (Student’s Book page 197)1. a) Translation vector ​ ( ​ 253 ​ ) ​.b) B and C, reflection in y 5 xc) Triangle with vertices (20.5;21), (0.5;21) and (20.5;22.5)2. Reflection in y 5 2x and translation by vector ( ​ ​ 322 ​ ) ​.3. A is point (22;25).4. Rotation about the origin through 180˚5. Reflection in the y-axis, rotation about (2;2) through 90˚ clockwise, reflection inthe x-axis, enlargement about the origin with scale factor 1__2 ​.Revision Exercise (Student’s Book page 202)1. c) nEFG: (22;24), (21;0) and (3;21)2. c) Rotation about the origin through 90˚ anticlockwise.3. Reflection in y 5 x.Enlargement by a scale factor 2 through the point (27;1).4. Rotation by 290˚ about (0, 0)(Rule: (x;y) è (y;2x))5. Enlargement with scale factor 1__ ​and centre (12;0).26. a) P'Q'R': (22;21), (22;1), (0;1)c) The original object was translated by the vector ( ​ ​ 2626 ​ ) ​to give the final image.Assessment 2 Chapters 6 – 11Question 11.1 a) NZ 5 60✓ mm (N midpoint since MN||ZY)✓✓ (3)b) MN 5 ​1__ ​ZY 5 40 mm ✓✓2ML 5 40 1 24 5 64 mm✓ (3)c) YK 5 2ML✓ 5 128 mm✓ (2)1.2 a) (2x 2 3) 2 5 x 2 1 9✓✓ (2)b) 4x 2 2 12x 1 9 5 x 2 1 9✓∴ 4x 2 2 x 2 2 12x 5 9 2 9✓62 EXPLORING MATHEMATICS FORM 3