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In the adjoining gure, two points A and B lie on the same side of a line XY if AD XY, BEXY and Cis the midpoint of AB, prove that CD CE

Question

In the adjoining figure, two points A and B lie on the same side of a line XY if AD \perp XY, BE \perp XY and C is the midpoint of AB, prove that CD=CE CD = CE .

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Solution

To prove that CD=CE CD = CE , we can follow these logical steps:

1. Break Down the Problem

  • Understand the given conditions:
    • Points A A and B B are situated on the same side of line XY XY .
    • Point C C is the midpoint of segment AB AB .
    • Line segments AD AD and BE BE intersect line XY XY perpendicularly at points D D and E E , respectively.

2. Relevant Concepts

  • Use the properties of midpoints and perpendicular lines.
  • Recall that if C C is the midpoint of AB AB , then: AC=CB AC = CB
  • Use the concept of right triangles formed by the perpendicular segments.

3. Analysis and Detail

  • Construct right triangles ACD ACD and BCE BCE .
  • By the definition of midpoint: CD=AC (the height from C to XY) CD = AC \cdot \text{ (the height from C to XY)} CE=BC (the height from C to XY) CE = BC \cdot \text{ (the height from C to XY)}
  • Since C C is the midpoint, AC=BC AC = BC .

4. Verify and Summarize

  • Since D D and E E are on the same line XY XY and ADXY AD \perp XY , BEXY BE \perp XY :
    • Both points D D and E E are at the same distance from line XY XY , confirming that CD CD and CE CE are equal as they are both the heights from C C to line XY XY .

Final Answer

Thus, we have proved that CD=CE CD = CE .

This problem has been solved

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