**GE6152 EG Notes**

Anna University Regulation 2013 Computer Science & EGineering (CSE) GE6152 EG Notes for all 5 units are provided below. Download link for CSE 1st SEM GE6152 ENGINEERING GRAPHICS Lecture Notes are listed down for students to make perfect utilization and score maximum marks with our study materials.

Unit -3 GE6152- ENGINEERING GRAPHICS

**Introduction**

An object having three dimensions, i.e., length, breadth and height is called as solid. In orthographic projection, minimums of two views are necessary to represent a solid. Front view is used to represent length and height and the top view is used to represent length and breadth. Sometimes the above two views are not sufficient to represent the details. So a third view called as side view either from left or from right is necessary.

** Objectives **

At the end of this session, you will be able to

- • Classify the different types of solids
- • Draw the projections of solids in various positions in the given quadrant

**Classification of Solids **

Solids are classified into two groups. They are

- • Polyhedra
- • Solids of Revolution

**Polyhedra **

A solid, which is bounded by plane surfaces or faces, is called a polyhedron. Polyhedra are classified into three sub groups; these are

1. Regular Polyhedra

2. Prisms

3. Pyramids

**Regular Polyhedra **

Polyhedra are regular if all their plane surfaces are regular polygons of the same shape and size. The regular plane surfaces are called “Faces” and the lines connecting adjacent faces are called “edges”.

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