The left box shows two shapes, each with a lettered point, and a line with the same two letters on its ends. Which figure shows how the shapes connect when each end of the line is attached to the point with the same letter?
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Answer: A
Check one letter at a time. Point M is at a corner of the rectangle, and point N is at the middle of a side of the square. Cross out any figure where either end of the line lands somewhere else or where a shape has changed. The shapes may be turned, so find each point by its place on the shape (corner, middle of a side, center), not by up, down, left or right.
- A (correct): The line joins a corner of the rectangle to the middle of a side of the square, the same spots as points M and N in the left box; turning a shape does not move a point on it.
- B: The line ends in the wrong place: it meets the square at a corner, but point N is at the middle of a side.
- C: The line ends in the wrong place: it meets the rectangle at the center, but point M is at a corner.
- D: The line ends in the wrong place: it meets the rectangle at the middle of a short side, but point M is at a corner and it meets the square at the center, but point N is at the middle of a side.