. In the adjoining fig-6 , name a) any 4 pairs of intersecting lines. b) 3 non – collinear points c) 4 collinear points

a)pl,pm,pn,ql

b)B,C and F are non-collinear points

c) A,C and E are collinear points

B, D and F are collinear points

Step-by-step explanation:

a) any 4 pairs of intersecting lines.

Line p intersects line l , line m and line n

Line q intersects line l , line m and line n

So, 4 pairs of intersecting lines are : pl,pm,pn,ql

b)3 non - col-linear points

Three or more points that lie on a same straight line are called collinear points.

When points are not collinear , then they are said to be non-collinear

So, B,C and F do not lie on the same line

So, They are non-collinear points

c)collinear points

A,C and E lies on same line

So, They are collinear

B, D and F lies on same line

So, they are collinear

7

step-by-step explanation:

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i