What were the four Middle Colonies

New York,New Jersey, Pennsylvania, Delaware.

Explanation:

NewYork: The Dutch-owned a colony called New Netherland. In 1664, Charles II granted New Netherland to his brother James, Duke of York. He just had to take it from the Dutch. He arrived with a fleet. The Dutch surrendered without a fight.

NewJersey: The Duke of York granted some land to Sir George Carteret and Lord John Berkeley who named their colony New Jersey. They provided liberal grants of land and freedom of religion. The two parts of the colony were not united into a royal colony until 1702.

Pennsylvania: Declaration of Independence was written and signed in Pennsylvania. The Continental Congress met in Philadelphia until it was captured by British General William Howe in 1777 and forced to move to York.

Delaware: When the Duke of York got New Netherland, he also received New Sweden which had been founded by Peter Minuit. He renamed this area, Delaware. This area became part of Pennsylvania until 1703 when it created its own legislature.

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explanation:

6 units. ab and lo are congruent sides, and if ab= 6 units, then lo would be the same.