waecE-LEARNING
Technical Drawing Paper 1,Nov/Dec. 2010  
Questions: 1 2 3 4 Main
General Comments
Strength
Weakness/Remedies









Question 4

 

(a) A triangle has a perimeter 130mm, base 40mm and a base angle 105°
(i) Construct the triangle;
(ii) State the other base angle
(b). Draw the isometric view of a machine part whose views are shown below




 

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OBSERVATION

Question 4a is on construction of a triangle given the perimeter, base and a base angle. To solve the problem use geometrical means to subtract the base from the perimeter, then bisect the other line of the triangle to locate the third point of the triangle as shown below. A good number of the candidates got the solution correctly

4a



Question 4b is on isometric drawing from two given views. The first step is to draw isometric axes or isometric box . locate the lowest point and take suitable measurements. The solution is given below. A good number of the candidates attempted the question, majority of whom did well.

4b













 




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