Скачать или смотреть ICSE CLASS 10 REFLECTION ( CO-ORDINATE GEOMETRY) ! DON'T LEAVE THIS CHAPTER ! IT'S SCORING AND EASY

REMEMBER

IF LINE X = 0, IT MEANS Y-AXIS.
IF LINE Y = 0, IT MEANS X-AXIS.

The line x = a, or in sum x = 1, 2 or 3 (a) it means line is parallel to y –axis
So y co-ordinate will not change use the formula ( - x + 2a, y)

The line y = b, or in sum y = 1, 2, or 3 (b) it means line is parallel to x-axis
So x coordinate will not change use the formula ( x , - y + 2a)





The line y = b, or in sum y = 1, 2, or 3 (b) it means line is parallel to x-axis
So x coordinate will not change use the formula ( x , - y + 2a)
THE POINT P ( 2 , 4) ON REFLECTION IN THE LINE Y = 1 IS MAPPED ONTO P’. FIND THE CORDINATES OF P’

FIND THE IMAGE OF THE POINT P (-3, -5) IN THE LINE Y = -2

FIND THE CO-ORDINATES OF THE POINT P WHICH DIVIDES THE LINE SEGMENT JOINING A (8, 9) AND B (-7, 4), INTERNALLY IN THE RATIO
2: 3

Point P ( 3, -5) is reflected to P’ in the x-axis. Also P on reflection in the y-axis is mapped as P”.
1. Find the co-ordinates of P’ and P”.
2. Compute the distance P’ P”.
3. Find the middle point of the line segment P’ P”.
4. On which co-ordinate axis does the middle point of the line segment PP” lie?
5. Given a line segment AB joining the points ( -4, 6 ) and B ( 8, -3)
6. Find (i) the ratio in which AB is divided by y axis

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