Quit

Introduction Reflection in a Line Two Axial Symmetries Reflection in a Point

Quit All points on a 2D plane can be associated with an ordered pair of real numbers. Draw two number lines at right angles to each other, the horizontal one is called the x-axis, the vertical one is called the y-axis. Every point can be associated with an ordered pair, the first number gives the x co-ordinate, the second the y co-ordinate. Always put curved brackets around the couple, and a comma between the first number and the second. It is very important to remember that the horizontal co-ordinate, the x co-ordinate comes first in the bracket. Introduction

Quit 1234 x y 7 B C A D Plot the points: A = (1,1) B = (1,6) C = (3,1) D = (3,6) Draw the lines [AB]; [BC]; [CD] and reveal a letter.

Quit x y C E A Reflection in a Line B D B A E C A = (–4,3); B = (–4,0); C = (–4,–3); D = (–1,3); E = (–2,0) D

Quit x D y C E A Two Axial Symmetries B A = (–4,3); B = (–4,0); C = (–4,–3); D = (–1,3); E = (–2,0) QY

Quit x y -5 C E A Reflection in a Point B D B C E A A = (–4,3); B = (–4,0); C = (–4,–3); D = (–1,3); E = (–2,0) D O

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