Please refer to textbook pg 141- 143 for the proof.

The coordinates of the given points must be arranged in anti clockwise direction. d) Graphs and equations of circles Definition :
A circle is the set of points equidistant from a point C(h,k) called the center. The fixed distance r from the center to any point on the circle is called the radius.

The standard equation of a circle with center C(h,k) and radius r is as follows:

Circle Formula

For instance, find the equation of a circle whose center is at (2, - 4) and radius 5.

Solution:

The required equation :

Solution1.7a

e) Click on this link to download the powerpoint slides on coordinate geometry. You should have the student version printed and attempt all the examples.

f) Upon complete the slides, you should have master the required skills to attempt the exercises in the textbook. You must be self-disciplined to attempt these exercises. Homework : Ex 7.1 (Pg 140 -141) : Q2, Q3, Q4, Q5 Ex 7.2 (Pg 144 – 145) : Q1, Q2, Q5, Q6 Ex 7.3 (Pg 149 - 150) : Q2, Q3, Q6, Q7 Ex 7.4 (Pg 156- 158) : Q1, Q4, Q6, Q11 Ex 9.2 (Pg 194) : Q1a, Q1d, Q2a, Q2b, Q2c, Q4, Q5, Q7, Q9

g) Now, it is the really challenge. It's time to assess your attainment. Complete this complusory assignment.

Sec 3 Term 3Unit 9 : Coordinate GeometryStarter :1. Basic Definition of Coordiate GeometryClick on this link to check on out more about coordinate geometry2. Skills in Coordinate Readinga) Grid Game.b) Shooting Game3. Equation of straight lineClick on this link to play the game to check out your skills on equation of straight line4. Other knowledgea) Gradientb) Midpointc) Distance FormulaMain Course:a) Equation of perpendicular lineb) Perpendicular Bisectorc) Shoelace FormulaPlease refer to textbook pg 141- 143 for the proof.The coordinates of the given points must be arranged in anti clockwise direction.d) Graphs and equations of circlesDefinition :A circle is the set of points equidistant from a point C(h,k) called the

center. The fixed distance r from the center to any point on the circle is called theradius.The standard equation of a circle with center C(h,k) and radius r is as follows:

For instance, find the equation of a circle whose center is at (2, - 4) and radius 5.

Solution:The required equation :

e) Click on this link to download the powerpoint slides on coordinate geometry.You should have the student version printed and attempt all the examples.Click on this set of slides for the detailed solutions.f) Upon complete the slides, you should have master the required skills to attempt the exercises in the textbook. You must be self-disciplined to attempt these exercises.Homework :Ex 7.1 (Pg 140 -141) : Q2, Q3, Q4, Q5Ex7.2 (Pg 144 – 145) : Q1, Q2, Q5, Q6Ex 7.3 (Pg 149 - 150) : Q2, Q3, Q6, Q7Ex 7.4 (Pg 156- 158) : Q1, Q4, Q6, Q11Ex 9.2 (Pg 194) : Q1a, Q1d, Q2a, Q2b, Q2c, Q4, Q5, Q7, Q9g) Now, it is the really challenge. It's time to assess your attainment. Complete this complusory assignment.Dessert:Are you ready for the finale of this unit? Click on Coordinate Geometry (2009) and play the game to access your final enlightenment in this unit.