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Introduction to Euclid Geometry — Maths STD 9 — Question

Gujarat BoardEnglish MediumSTD 9MathsIntroduction to Euclid Geometry1 Mark
MCQ
Which of the following is a true statement?
  • A
    The floor and a wall of a room are parallel planes.
  • B
    The ceiling and a wall of a room are parallel planes.
  • ✓
    The floor and the ceiling of a room are parallel planes.
  • D
    Two adjacent walls of a room are parallel planes.
✓

Answer

Correct option: C.
The floor and the ceiling of a room are parallel planes.
Two lines are said to be parallel, if they have no point in common.
Options $(a)$, $(b)$ and $(d)$ have a common point, hence they are not parallel.
In option $(c)$, the floor and the ceiling of a room are parallel to each other is a true statement.

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