Refer to Top View
The distance of the point P from the y-axis is
(i) 4
(ii) 15
(iii) 19
(iv) 25
1
(c)
Refer to Front View
The distance between the points A and S is
(i) 4
(ii) 8
(iii)16
(iv)20
1
(d)
Refer to Front View
Find the co-ordinates of the point which divides the line segment joining the
points A and B in the ratio 1:3 internally.
(i) (8.5,2.0)
(ii) (2.0,9.5)
(iii) (3.0,7.5)
(iv) (2.0,8.5)
1
(e)
Refer to Front View
If a point (x,y) is equidistant from the Q(9,8) and S(17,8),then
(i) x+y=13
(ii) x-13=0
(iii) y-13=0
(iv)x-y=13
1
18.
Case Study Based- 2
SCALE FACTOR AND SIMILARITY
SCALE FACTOR
A scale drawing of an object is the same shape as the object but a different
size.
The scale of a drawing is a comparison of the length used on a drawing to
the length it represents. The scale is written as a ratio.
SIMILAR FIGURES
The ratio of two corresponding sides in similar figures is called the scale
Answers
Given : Views
To Find : distance of the point P from the y-axis is (i) 4 (ii) 15 (iii) 19 (iv) 25
The distance between the points A and S
co-ordinates of the point which divides the line segment joining the
points A and B in the ratio 1:3 internally.
point (x,y) is equidistant from the Q(9,8) and S(17,8),then
Solution:
Position of point P is ( 4 , 8)
Distance for y axis = 4
Distance from x axis = 8
distance of the point P from the y-axis is 4 cm
The distance between the points A and S is 16
co-ordinates of the point which divides the line segment joining the
points A and B in the ratio 1:3
A = ( 1, 8) , B = ( 5 , 10)
(1* 5 +3 * 1)/(3 + 1) , ( 1 *10 + 3*8)/(3 + 1)
2 , 8.5
(iv) (2.0,8.5)
a point (x,y) is equidistant from the Q(9,8) and S(17,8),then
Slope = 0 slope of perpendicular bisector = 1/0
y = x/0 + c
=> x = c => x = ( 9 + 17)/2 = 13 => x - 13 = 0
Info : about view:
Top View
Front View
Side View (right, or left)
Bottom View ( opposite side of Top View)
Rear View ( opposite side of Front View)
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