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Introduction or Tester Programme
Sect
or
Semicircle
Quadrant
Segment
Diamet
er Radius
Normal
Tang
ent
Chord
Technical Graphics is a Universal Language
• Technical Graphics is one of the technology subjects offered at junior cycle.
• In Technical Graphics students use drawing equipment to create precise and accurate drawings.
• These drawings are used to communicate ideas or solve problems.
How to produce neat drawings of everyday items
How to represent 3-D objects on paper How to create models of objects on the
computer How to use freehand sketching, colouring
and shading to represent objects
Communication skills Problem solving skills Computer skills Creative thinking skills
Technical Graphics can be very useful in other subjects such as:
MathematicsConstruction StudiesMaterials Technology Wood Engineering Technology & MetalworkJunior & Leaving Certificate TechnologyArt
Project Maths
Technical Graphics
Applications of Geometry and Problem
Solving
Applications of Geometry and Problem
Solving
Technical GraphicsTechnical Graphics
Project Maths
Project Maths
Ordinary Level
◦Paper 2◦Leaving Certificate
Higher Level
◦Paper 2◦Leaving Certificate
Higher Level
◦Paper 2◦Leaving Certificate
P
R
Q
From these exercises you will learn:
◦ The difference between construction lines and
finish lines
◦ The importance of draftsmanship
◦ The effect of shading and rendering on a drawing
◦ What indexing is, and how it can assist
complicated drawings
Activity 1
Activity 1
Activity 2
Activity 2
Activity 3 & 4
Activity 3 & 4
Activity 5
1 2 3 4 5
1
2
3
4
5
1 2 3 4
1
2
3
4
234 55
5
1
2
3
4
1
2
3
4
2345
5
2
3
4
1 2 3 4
2
3
4
51234
Activity 5
Activity 6
Activity 6
From these exercises you will learn:◦ The name and properties of various polygons◦ What indexing is, and how it can assist
complicated drawings◦ How to construct a Hexagon using a compass◦ How to construct an Octagon using a square and
a compass◦ That joining points in a different order can
produce different shapes◦ The importance of draftsmanship◦ The effect of shading and rendering on a drawing
Equilateral Triangle Square
Pentagon Hexagon Heptagon
Octagon Nonagon Decagon Circle
Polygons
Activity 7
1
2
34
5
Activity 7
Activity 8
1
2
34
5
Activity 8
Activity 9
1
2
34
5
Activity 9
Activity 10
Set your compass at the required radius and do not change it.
Set your compass at the required radius and do not change it.
1
2
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5
6
Activity 10
Activity 11
1
2
3
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5
6
Activity 11
Activity 12
1
2
3
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5
6
Activity 12
Activity 13
1
2
3
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5
6
Activity 13
Activity 14
1
2
3
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5
6
Activity 14
Activity 15
1
2
3
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5
6 7
8
9
12
11
10
Activity 15
Activity 16
1
2
3
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5
6
7
8 9
Activity 16
Activity 17
1
2
3
4
5
6 7
8
910
11
12
Activity 17
Activity 18
1
2
3
4
5
6 7
8
9
12
11
10
Activity 18
Activity 19
1 2
3
4
56
7
8
Activity 19
Activity 20
1
2
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4
5
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7
8
Activity 20
Activity 21
1
2
3
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6
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8
Activity 21
Activity 22
1
2
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8
Activity 22
Activity 23
1
2
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6
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8
Activity 23
Activity 24
1
2
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5
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8
Activity 24
From these exercises you will learn:
◦ How to construct an ellipse using the trammel method
◦ How to construct an ellipse using the compass method
◦ Application of the ellipse in everyday life◦ The importance of draftsmanship◦ The effect of shading and rendering on a drawing
Ellipse
Cylinder
Ellipse
Cone
Inside an Atom
Activity 25 & 26
½ Minor Axis
½ Major Axis
Min
or
Axis
Major Axis
PA B
P
A
B
P
A
B
P
A
B
P
A
B
Activity 25
Major Axis
Min
or
Axis
Major Circle
Minor Circle
30°
60°
½Major Axis
F2F1
Activity 26
Activity 27
Activity 28
Activity 29
Activity 30
4223
3334
2323
1313
Activity 31
1111
2311
3242
211
Activity 32
22
4224
3142
Activity 33
3
4
1342
31
31
Activity 34
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