Coordinate Geometry Computer Assisted Instructions Anju Soman Roll no. 90 B.Ed (2014- 2015) H.G.M. Azam College Of Education Topic:
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Coordinate Geometry
Computer Assisted Instructions
Anju SomanRoll no. 90B.Ed (2014-2015)
H.G.M. Azam College Of Education
Topic:
What is Coordinate Geometry?
A system of geometry where the position of points on the plane is described using an ordered pair of numbers.
Founder of Coordinate Geometry
French Mathematician René Descartes (1596 - 1650).
Coordinate Plane
It has two scales - one running across the plane called the "x axis" and another a right angles to it called the “y axis”.
The point where the axes cross is called the “Origin” and is where both x and y are zero.
On the x-axis, values to the right are positive and those to the left are negative.
On the y-axis, values above the origin are positive and those below are negative.
Quadrant
X- axis
Y- axis
III
III IV
(+,+)
(-,-) (+,-)
(-,+)
X- axis
Y- axis
St Quadrantnd Quadrant
rd Quadrant th Quadrant+2+1 +3-1-2-3
+1
+2
+3
-1
-2
-3
Abscissa
+1
+2
+3
+2+1 +3
-1
-2
-3
-1-2-3-4 +4
X- axisX- axis O
Y- axis
Y- axis
(-3,-2) The abscissa is the x-coordinate of a point on the coordinate plane. The distance along the horizontal axis.
Ordinate
+1
+2
+3
+2+1 +3-1
-2
-3
-1-2-3-4 +4
X- axisX- axis O
Y- axis
Y- axis
(-3,-2)The y-coordinate of a point on the coordinate plane : its distance from the x-axis measured parallel to the y-axis.
Answer The FollowingQuestions
Now…….
Q:1 How many Quadrants are there?
3 Quadrants
7 Quadrants
6 Quadrants
1.
2.
3.
4.
4 Quadrants
Well done..!
Correct Answer
NEXT……
Wrong Answer !
Try Again….
Q:2 (-1,0) lies in which Quadrant?
X- axis
X- axis O
Y- axis
Y- axis
+1
+2
+3
+2+1 +3-1
-2
-3
-1-2-3-4 +4
1. On Y- axis
2. In the IVth quadrant
3. In the IInd quadrant
4. On X- axis
Well done..!
Correct AnswerNEXT……
Wrong Answer !
Try Again….
Q:3 (-3), (2), (-1.5) lies on which axis?
1. X- axis
2. Y- axis
3. Il nd quadrant
4. III rd quadrant
Well done..!
Correct AnswerNEXT……
Wrong Answer !
Try Again….
+1
+2
+3
+2+1 +3-1
-2
-3
-1-2-3-4 +4
X- axisX- axis O
Y- axis
Y- axis
(-3,-2)
Q: 4 Find the Ordinate in (-3, -2)
1. -3 is ordinate
2. -2 is ordinate
3. (-3, -2) is ordinate
4. Non of the above
Correct AnswerNEXT……
Well done..!
Wrong Answer !
Try Again….
+1
+2
+3
+2+1 +3-1
-2
-3
-1-2-3-4 +4
X- axisX- axis O
Y- axis
Y- axis
(-3,-2)
Q: 5 Find the Abscissa in (-3, -2)
4. -3 is Abscissa
3. -2 is Abscissa
1 . (-3, -2) is Abscissa
2. Abscissa is 4th quadrant
Well done..!
Correct AnswerNEXT……
Wrong Answer !
Try Again….
You have answered all the questions..!!
Thank you
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