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A rectangle has a diagonal perpendicular to the other diagonal. What is the rectangle?

Class 9Rectangle, Rhombus and SquareGeometry — Quadrilaterals
  • AA kite
  • BA rhombus that is not a square
  • CA square
  • DA rectangle with unequal sides

Step-by-Step Solution

Perpendicular bisecting diagonals make the sides equal (each side is the hypotenuse of congruent right triangles). A rectangle with equal sides is a square.
Answer: C) A square

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