The problem figure shows the top view of an object. Identify the correct elevation amongst the answer figures looking in the direction of arrow.
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Project the plan to the front view: each step of the stepped outline gives a vertical line, and the diamond-shaped block gives two faces meeting at its centre.
The arrow points up the page, so we look from the bottom of the plan and the width of the elevation equals the plan width. The outer outline is a stepped, plus-like base with five columns across its widest strip (the step edges and the two edges of the central tab give the vertical lines). In the front view this gives a wide base made of five rectangles side by side. Above it stands the inner rectangular block, shown as a single narrower rectangle. On top is the diamond (rhombus) shaped block: seen from the front, its two front faces meet along the front corner of the rhombus, which is at the centre. So it appears as a rectangle divided into two equal parts by a vertical line in the middle. Option 1 has an off-centre division on top; option 2 has a four-box base; option 4 has an undivided top. Option 3 shows a five-box base, a middle block and a top block divided into two at the centre. Answer: (3) answer figure 3
