A (4,7,8) B (2,3,4) , C (-1,-2,1) and D (1,2,5) are vertices of a quadrilateral. The quadrilateral is a
Square
Rectangle
Rhombus
Parallelogram
If z1,z2,z3,z4 are the four complex numbers represented by the vertices of a quadrilateral taken in order such that z1−z2=z3−z4 and amp z4−z1z2−z1=π2, then the quadrilateral is a
ABCD is a parallelogram. What kind of quadrilateral will it be if,
AC = BD but not perpendicular to BD ?
In quadrilateral ABCD
∠A:∠B:∠C:∠D=3:4:5:6
then quadrilateral ABCD is a