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JSS2: BASIC TECHNOLOGY - 2ND TERM

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  1. Geometric Construction | Week 1
    5 Topics
    |
    1 Quiz
  2. Construction of Angles & Circles | Week 2
    6 Topics
    |
    1 Quiz
  3. Construction of Triangles | Week 3
    5 Topics
    |
    1 Quiz
  4. Quadrilaterals | Week 4
    2 Topics
    |
    1 Quiz
  5. Construction of Quadrilaterals | Week 5
    3 Topics
    |
    1 Quiz
  6. Polygons | Week 6
    3 Topics
    |
    1 Quiz
  7. Plane Figures | Week 7
    3 Topics
    |
    1 Quiz
  8. Enlargement And Reduction of Plane Figures | Week 8
    2 Topics
  9. WoodWork Machines | Week 9
    2 Topics
    |
    1 Quiz
  10. Care & Maintenance of WoodWork Machines | Week 10
    1 Topic
    |
    1 Quiz



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Topic Content:

  • Divide a Line into a Given Number of Equal Parts (10 equal divisions)
    • Video Illustration
  • Divide a line in a Given Proportion or Ratio
    • Video Illustration

a. Divide a Line into a Given Number of Equal Parts (10 equal divisions):

Steps taken to divide a line into a given number of equal parts (10 equal divisions)
division of a line

Steps taken are;

i. Draw the given line AB = 100 mm

ii. Draw AC at any convenient angle, and set off from point A, ten equal divisions of the line using a divider or pencil and ruler

iii. Join point 10 to point B, and through the other points, draw lines parallel to 10B by sliding the set-square on any straight edge such as a tee-square shown below. AB is now divided into the required number of equal parts, i.e. 10.

b. Divide a Line in a Given Proportion or Ratio:

For example, divide a line of length 10 cm in the ratio of 3:2:2

 

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2021 JSCE Basic Technology Technical Drawing Past Question 3

Question 3

Steps:

i. Draw the given line AB = 110mm

ii. Draw AC at any convenient angle, and set off from point A, 8 equal divisions of the line using a divider or pencil and ruler

iii. Join point 8 to point B, and through the other points, draw lines parallel to 8B by sliding the set-square on any straight edge such as a tee-square shown below. AB is now divided into the required number of equal parts, i.e. 8.

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