Given that ABCD is a parallelogram and A(1,1,0) B(-1,-1,-1) C(2,2,0) then what are the co-ordinates of D ? Also find the area of parallelogram ABCD ?
A triangle has 2 sides of length 5 and 6. The triangle's area is 12 .What is the angle between these two sides ?
Given the points A=(1,0,1) and B(1,1,1) and C(1,6,a) determine : (a) For what values of z are the points collinear ? (b) Determine if value exists for a so that A, B, c are three vertices of a parallelogram of area 3. If the value exists determine the co-ordinates of C ?