Draw a line segment of length 7 cm. From a point P on it which divides it into the ratio 3:5.
Steps of construction
1. Draw a line AB=7 cm.
2. Draw a ray AX, (Acute ∠BAX).
3. Along AX, divide (3+5) 8 equals points
A1, A2, A3, A4, A5, A6, A7, A8
AA1=A1A2=A2A3=A3A4=A4A5=A5A6=A6A7= A7A8
4. Join A8B.
5. Draw A3CA8B meeting AB at C.
AC : CB=3:5
Let, AA1=A1A2=A2A3=A3A4=........=A7A8=x
In ∆ABA8,
A3CA8B
∴
AC:CB = 3:5