(Q3)What is the distance between two points H and C? And also find the distance between two points A and B where A(-1,2),B(1,2),C(2,1),D(2,-1),E(1,-2),F(-1,-2),G(-2,-1),H(-2,1) .

Given: A(-1,2),B(1,2),C(2,1),D(2,-1),E(1,-2),F(-1,-2),G(-2,-1),H(-2,1)

Distance between any two points P(x1,y1) and Q(x2,y2)is

PQ=√(x2-x1)2 + (y2-y1)2

Distance between H and C is HC

= √( (2 - (-))2 + (1 - )2)

= √

= units

Distance between the A and B is

AB = √( (1 - (-) )2 + (2 - )2)

= √

=