# CBSE 11th Class Engineering Graphics Syllabus

## Course Structure

Units Topics Marks
Unit I Plane Geometry 16
1 Lines, angles and rectilinear figures
2 Circles and tangents
3 Special curves: ellipse, parabola, involute, cycloid. Helix and Sine-curve
Unit II Solid Geometry 27
4 Orthographic-projections of points, lines laminae, (plane) and solids
5 Section of solid-figures
Unit III Machine Drawing 27
6 Orthographic projections of simple machineblocks
7 Isometric-projection of laminae (plane) figures
8 Development of surfaces
Unit IV Practical 10
Total 70

## Course Syllabus

### Unit I: Plane Geometry

• Printing English alphabets (capital and small) numerals in standard proportions

• Unidirectional/aligned system of dimensioning as per SP: 46-2003 (Revised)

Chapter 1: Lines, angles and rectilinear figures

• Construction of lines
• Angles and their divisions
• Simple questions based on −
• Triangles
• Square
• Rhombus
• Trapeziums
• Regular polygons-pentagon
• Hexagon
• Octagon

Chapter 2: Circles and tangents

• Construction of circles
• External and internal tangents of circles
• Inscribing
• Circumscribing circles in equilateral triangle
• Square
• Rhombus
• Regular polygons-pentagon
• Hexagon and octagon

Chapter 3: Construction of Engineering curves

• Ellipses by concentric circles, intersecting arcs and intersecting lines
• Parabola by intersecting lines and intersecting arcs
• Involute of a circle, cycloid, helix and sine curve

### Unit II: Solid Geometry

Chapter 4: Orthographic-projections

• Methods of orthographic projections and dimensioning strictly as per SP: 46- 2003 revised conventions

• Projection of −

• Points

• Lines

• Regular plane figure

• Projection of right regular solids such as −

• Cubes

• Prisms

• Pyramids (square, triangular, pentagonal and hexagonal)

• Cones

• Cylinders

• Spheres

• Hemi-spheres

• Frustum of pyramids and cone when they are kept with their axis −

a. Perpendicular, to HP/VP

b. Parallel to one plane and inclined to the other

c. Parallel to HP and VP both

Chapter 5: Section of solid-figures

• Section of solids under the same conditions mentioned above made by the −

• Horizontal

• Vertical

• Inclined planes (also showing true-shape of section)

### Unit III. Machine Drawing

Chapter 6: Orthographic projections of simple machine blocks

Chapter 7: Isometric-projection of laminae (plane) figures

• Construction of isometric scale showing main divisions of 10 mm and smaller divisions of 1 mm each.

• Isometric projection (drawn to isometric scale) of figures such as −

• Triangles

• Squares

• Pentagons

• Hexagons

• Circles

• Semi-circles (with their surface parallel to HP or VP and its one side or diagonal or diameter should be either parallel or perpendicular to HP/VP)

Chapter 8: Development of surfaces

• Cube
• Cuboid
• Prisms-triangular
• Square
• Pentagonal
• Hexagonal
• Pyramids
• Triangular
• Square
• Pentagonal
• Hexagonal
• Right circular cylinder and cone

### Unit IV: Practical

• Developing "Prisms" and "Pyramids" with the help of card board (thick paper)

• Developing different types of packing boxes (cartons)

• Making different types of graphic designs/murals for interior/exterior decorations in colour using the knowledge of geometrical figures with the use of any Computer Software such as −

• CORAL DRAW

• PHOTOSHOP, etc.

• Drawing ellipse by Trammel and Thread method on the ground / drawing sheet / plywood / cardboard, etc.

• Preparing top-view (plan) of a class room, Home −

• Drawing room / Bedroom / Study room / Kitchen

• Engineering Graphics room

• Drawing different objects kept in rooms

• Drawing through activities −

• Involutes

• Cycloid

• Helix

• Sine curves (listing their uses in daily life)

• Preparing the following sections of solids (prisms, pyramids, spheres, etc.) with clay, soap, thermocol, plasticine, wax or any other material easily and economically available. When the cutting plane is: parallel to the base, perpendicular to the base and inclined to the base. Also creating different objects with combination of above solids. 