instruction:
Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
question:
This means that it has four equal sides and four equal angles (90 degree angles, or right angles).
answer:
This means it has four equal sides and four equal angles. These are 90 degree angles or right angles.

question:
Coat of arms The coat of arms of the municipality are taken from the Garbani, or Garban family for its French and Northern American branch, originating from the village and whose certain members illustrated themselves as magistrates and Swiss statesmen.
answer:
The coat of arms of the municipality are taken from the Garbani, or Garban family due to its French and Northern American branch.

question:
Many of these officers were black and had a fear that as they blended in very well they would be mistaken for a criminal by other police officers, especially in case of drawing their gun in an emergency.
answer:
Some officers were black and were fearful that as they blended in they would be mistaken for a criminal by other police officers, especially in cases of drawing their guns in an emergency.