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Lesson Posted on 03 Jan Co-ordinate Geometry

Raj Kumar

I am Six Sigma Black belt certified. I am 2011 pass out in B.tech from NIT Srinagar. I am an experienced,...

Graphical Transformation: read more

Graphical Transformation:

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Comments Lesson Posted on 03 Jan Co-ordinate Geometry

Gradient (Slope) Of Line / Inclination

Raj Kumar

I am Six Sigma Black belt certified. I am 2011 pass out in B.tech from NIT Srinagar. I am an experienced,...

Gradient is defined as inclination or declination Slope/Gradient = Verticle Rise/HorizontaL Run In the following triangle, the gradient of the line is given by: i. Slope = m = (y2-y1/X2-X1) = Change in Y/Chane in X ii. Slope = Verticle Rise/HorizontaL Run iii. Slope = Change in absicss/Change in... read more

tan α = opposite/adjacent

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Comments Lesson Posted on 27/12/2017 Co-ordinate Geometry

Raj Kumar

I am Six Sigma Black belt certified. I am 2011 pass out in B.tech from NIT Srinagar. I am an experienced,...

Transformation is basically the "change of form" Etymology Trans = across, bayond + formare = to form These transformations fall into two categories: i. Rigid transformations that do not change the shape or size of the pre-image ii. Non-rigid transformations that change the size but not the shape... read more

Transformation is basically the "change of form"

Etymology Trans = across, bayond + formare = to form

These transformations fall into two categories:

i. Rigid transformations that do not change the shape or size of the pre-image

ii. Non-rigid transformations that change the size but not the shape of the pre-image.

Basically four type of transformation:

1) Translation (Shifting/Sliding in linear direction) or Horizontal or vertical movement either upward or downward

2) Rotation:

i. A rotation is atransformation in which the object is rotated about a fixed point.

ii. Turn Around either in Clockwise or in anticlockwise/Counterclockwise direction

Reflection can be:

a. Around X axis

b. Around Y Axis

c. Around line Y=X or Y=-X

d. Around the Origin

3) Reflection:

i. Mirror Image of anything

ii. It is basically a 'flip' of a shape over the line of reflection

4) Dilation:

i. Dilation that creates a smaller image is called a reduction.

ii. A dilation stretches or shrinks the original figure.

iii. A description of a dilation includes the scale factor (or ratio) and the center of the dilation.

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Comments Lesson Posted on 27/12/2017 Co-ordinate Geometry

Raj Kumar

Important Properties of Paralleolgram: 1) Opposite side length are Exactly Equal or Congruent that means. 2) Both line pairs will be parallel to each other. 3) Opposite parallel lines slopes are equal. 4) Area of paralellogram = Base X Altitude. 5) Opposite angles are exactly equal or congruent.... read more

Important Properties of Paralleolgram:

1) Opposite side length are Exactly Equal or Congruent that means.

2) Both line pairs will be parallel to each other.

3) Opposite parallel lines slopes are equal.

4) Area of paralellogram = Base X Altitude.

5) Opposite angles are exactly equal or congruent.

6) Sum of adjacent or consective angles is 180°.

7) If one angle is 90° then all angles will be 90°.

8) Diagnols of parallelogram bisect each other.

9) Each diagonal of parallelogram seperates into two exactly equal triangles.

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Comments Answered on 14/12/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Co-ordinate Geometry

What do you mean by abscissa and ordinate of a given point?

Ravikumar

Abscissa. The horizontal ("x") value in a pair of coordinates. The ordinate of an ordered pair (x, y) is its second component, i.e. it is y.

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Answers 1 Comments Answered on 14/12/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Co-ordinate Geometry

What is the mid-point formula of a line AB with a mid-point C?

Ravikumar

Suppose A=(x1,y1) and B=(x2,y2) are the end points of a line segment AB Then the mid point C is given by: C =[ (x1+x2)/2 , (y1+y2)/2 ].

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Answers 1 Comments Answered on 14/12/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Co-ordinate Geometry

What do you mean by Cartesian plane?

Ravikumar

It is a plane which has a horizontal line (x axis) and a vertical line (y axis). It is also known as coordinate plane.

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What is quadrant of a plane?

Ravikumar

The X and Y axis divide the plane into four regions which are called quadrants.

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In Which quadrant or on which axis do each of the points (-2,4), (3,-1), (-1,0), (1,2), (-3,-5) lie?

Ravikumar

(-2,4) II quadrant (3,-1) IV quadrant (-1,0) X axis (1,2) I quadrant (-3,-5) III quadrant

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Does the point (-3, -5) lies on the y-axis?

Ravikumar

No, It lies in the III quadrant.

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