How many different patterns of pens are present in the given figure?
Show Hint
In visual classification problems, focus on the intrinsic properties of the objects (like pattern, shape, color), not their extrinsic properties (like position, orientation, size) unless the question specifies to do so. Create a checklist of patterns you find to ensure you don't miss any or double-count.
Step 1: Understanding the Question:
The task is to identify the unique designs or patterns on the barrels of the pens shown in the image. The orientation (angle) of the pen does not create a new pattern. Step 2: Identifying and Categorizing the Patterns:
By carefully examining the pens in the figure, we can classify them into distinct groups based on their patterns.
Solid Color: Some pens are a solid dark color (presumably black) with no pattern.
Horizontal Stripes: Some pens have simple, evenly spaced horizontal lines along the barrel.
Wavy Lines: Some pens feature a pattern of continuous, parallel wavy lines.
Zig-zag (Sawtooth): Some pens have a sharp, zig-zag or sawtooth pattern.
Cross-hatch (Grid): Some pens have a grid-like pattern formed by intersecting perpendicular lines.
Step 3: Final Answer:
After scanning the entire figure, we can confirm that all the pens shown fall into one of these five categories. There are no other unique patterns present.
Therefore, there are 5 different patterns of pens.
