Geometry

Question Analysis

The problem is about identifying the shape of the top and bottom bases of a cylinder when it is drawn in isometric projection. We need to understand the principles of isometric projection to answer this.

 

Key Concept Explanation

Isometric projection: When representing circular shapes like the bases of a cylinder, this projection distorts the circle.

 

Step - by - Step Solution

1. Recall that in three - dimensional space, the top and bottom bases of a cylinder are circles.

2. In an isometric projection, the circular bases are transformed.

3. The circular shape is stretched and appears as an ellipse in the isometric drawing. This is because the isometric projection changes the way the circular shape is viewed in two dimensions.

 

Option Analysis

Circle: Incorrect. The circular bases of the cylinder are distorted in isometric projection and do not appear as circles.

Ellipse: Correct....