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
A
square
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
rhombus
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
rectangle
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
a cyclic quadrilateral
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct option is D a cyclic quadrilateral We have z1−z4=z2−z3 ⇒z1+z3=z2+z4 ⇒z1+z32=z2+z42 Thus, the diagonals bisect each other. Here, z1+z3 and z2+z4 represents the diagonals. ∴ It is a parallelogram Also, amp(z4−z1z2−z1)=π2 Here, z4−z1 and z2−z1 represents sides joined by vertices z4,z1 and z2,z1 respectively. thus, angle at z1 is a right angle ∴ It is a rectangle and hence a cyclic quadrilateral. Therefore, the correct option is A.