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Dilations

Dilations, in a geometric context, refer to transformations that enlarge or reduce the size of an object by a scale factor, without altering its shape. This scaling occurs relative to a fixed point known as the center of dilation. The scale factor determines how much larger or smaller the image becomes; a factor greater than 1 signifies enlargement, while a factor between 0 and 1 represents a reduction. In a medical context, dilations can also refer to the widening or enlargement of a body part or organ, often used to treat certain medical conditions. Understanding dilations is crucial in geometry, medical procedures and understanding of space and transformations.

Dilations meaning with examples

  • In geometry class, the teacher demonstrated dilations by stretching a triangle, keeping its angles the same. Students learned that the scale factor determines if it is an enlargement or reduction. The center of dilation was kept constant.
  • The architect used dilations to resize the building plans, testing different scales to meet the client's needs. Each dilation required careful calculations to preserve the proportions of the design. The center was based at the building's center.
  • During her eye exam, the doctor used eye drops to cause dilations of the pupils so that the interior of the eye could be clearly examined. This permitted a view of the optic nerve, which allowed a good diagnosis of the patient's eye health.
  • In treating a patient with a stricture, the surgeon used a series of dilations to widen the constricted esophagus. This was essential to restore the patient's ability to swallow solid foods. This was a life saving procedure for this patient.
  • After a traumatic injury, the blood vessels in the injured area showed signs of dilations to facilitate increased blood flow and healing. This natural process is a vital part of the body's self-repair mechanism. The increased blood flow showed a positive response.

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