- Geometry Proof: How to prove that if a rectangle has perpendicular diagonals, it must be a square?

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What are some possible theories on the origin of the universe? A bug completes one lap along the edge of a
circular planter of radius 20.8 cm in 11.26 s.How fast was it traveling?Answer in units of cm/s.? What is half life? H(p) = p − 3
p2 + 5? Explain why the names intrusive and extrusive are appropriate for the two types of igneous rocks.?