Answer: D
Explanation: cuz I did this before and I got the question right
Answer:
Rhombus. It is the only quadrilateral that has all sides equal.
Here we see the sides are all 5 cm.
D. Cloister, the meaning is cloister<span> (from Latin claustrum, "enclosure") is a covered walk, open gallery, or open arcade running along the walls of buildings and forming a quadrangle or garth.</span>