Question
A jigsaw puzzle has 2 pieces. One of the pieces is shown above. Which one of the given options for the missing piece when assembled will form a rectangle? The piece can be moved, rotated or flipped to assemble with the above piece.
Official answer and solution
- Official answer
- A
- From
- Official GATE 2021 answer key
Solution
Analyze the boundary contour and tab-and-blank dimensions to find the complementary jigsaw piece.
The given piece has a flat top edge and a flat right vertical edge. Its left edge has alternating rectilinear tabs and indentations.
To form a solid rectangle with two pieces, the second piece must have complementary tabs where the first piece has indentations, and indentations where the first piece has tabs.
Rotating Option A by 90 degrees counter-clockwise or reflecting it aligns its interlocking fingers and slots exactly with the boundary of the stem piece, forming a complete rectangle.
A
The answer is the one in the official GATE answer key. The solution is this site's own explanation.
Source
- Paper
- GATE 2021 Computer Science and Information Technology - Session 2 (CS2)
- Question
- 7 of 65, printed as GA Q.7
- Section
- General Aptitude
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