Hi, what is the question?
A square has parallel opposite sides, and congruent four sides.
The coordinates of the square are given as:




Calculate the distance between the vertices of the square using the following distance formula

So, we have:








Notice that all the side lengths of the square are the same.
Hence, the quadrilateral EFGH is square
Read more about squares at:
brainly.com/question/25926201
Answer: Eukaryotic
Explanation:
Algae is a photosynthetic eukaryotic organism. Eukaryotic cells have organelles and nuclei.