1) Draw an ellipse with a focus at point F and directrix CD where the distance between F and CD is 65mm. 2) Divide the line segment CF into 7 equal parts. Mark the third division from F as point V. 3) The ellipse is drawn through points C, V, and B.

1. Draw an ellipse by general method, given distance of focus from
directrix 65mm and eccentricity ¾.
A
1’
E
C F
V 1
B
Given CF=65mm
Given, eccentricity=3/4. Therefore divide CF in 7 equal
parts and mark V at 3rd division from F

2. PROBLEM
A regular hexagon of 40mm side has a corner in the HP.
Its surface inclined at45 to the HP and the top view of
the diagonal through the corner which is in the HP
makes an angle of 60° with the VP. Draw its projections.
Top view of the diagonal
Plane inclined to HP making 60 with the VP.
Plane parallel to HP at 45 and ┴ to VP
d1’
c1’
e1’
b1’
f1’
b’ c’
X a’ f’ e’ d’ 45 a1’ Y
60°
f1
f1 e1 a1
f e
e1
b1
a d d1
a1
d1
c
1
b c
b1 c1

3. 3
4
2
P3
P4 5
3’
4’
1 P2 2’
P5
5’
1’
P1
6’ P6
P12 12 6
12’
7’
11’
P7
P11 8’
10’ 7
9’ P8
P10
11 P9
8
10
9

4. PROBLEM: A point moves in a plane in such a way that its distance from a fixed point is equal to its distance from a fixed line. The
distance between fixed point and the fixed line is 65 mm.
A
1’ E
2’
3’
4’
F
C D
1
2
3
4
B