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Match the solid with its plan when resting on its base with the axis vertical.

1. Cylinder   2. Square pyramid   3. Cone

P. A square with diagonals drawn   Q. A circle   R. A circle with radial generators

  • A.1-Q, 2-R, 3-P
  • B.1-R, 2-P, 3-Q
  • C.1-Q, 2-P, 3-R
  • D.1-P, 2-Q, 3-R

Answer: C

Correct answer: 1-Q, 2-P, 3-R

Each plan is the base figure at true size, with whatever edges or generators are visible drawn on it. A cylinder gives a plain circle. A square pyramid gives a square with its diagonals, the diagonals being the four lateral edges seen from above. And a cone gives a circle on which radial generators may be drawn to indicate the surface.

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