- AThey form a rhombus
- BThey form a parallelogram
- CThey form a square
- DThey form no quadrilateral: A, C, B are collinear
Step-by-Step Solution
AC = , CB = , AB = . AC + CB = AB, so C lies on AB and the four points cannot make a quadrilateral.
Answer: D) They form no quadrilateral: A, C, B are collinear