State whether each object represents a point, line or plane,
1. Stretched electric wire:
2. Book cover, :
3. Tip of a needle
4. Edge of a ruler:
5. Wall
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- Stretched electric wire - a line
- Book cover - a place
- Tip of a niddle - a point
- Edge of a ruler - a line
- Wall - a place
Step-by-step explanation:
- Stretched electric wire represents a line because when its thickness is neglected, it can be extended in both sides infinitely.
- Book cover represents a plane because its surface is flat and can be extended infinitely.
- Tip of a needle represents a point because it has no dimension or zero dimension having no length or width.
- Edge of a ruler represents a line because it is similar to any straight line drawn on paper.
- Wall represents a plane because it is flat with two dimensions. However its surface is either rough or smooth.
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