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WAEC REVISION – Construction and Loci

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A locus is a set of points satisfying a certain condition. For example, the locus of points that are 1cm from the origin is a circle of radius 1cm centered on the origin, since all points on this circle are 1cm from the origin. Loci are used to identify areas that satisfy criteria such as a given distance from a point or halfway between two lines.

In this topic, we cover the following: Basic geometrical construction, further constructions, locus, common loci and construction loci. At the end of this topic, students should understand the following among other things:

  • Recall and build on previous knowledge to use ruler and compasses to: bisect a given line segment, bisect any angle, construct special angles and combinations of angles,
  • Recall and build on previous knowledge to construct triangles and quadrilaterals involving the various constructions,
  • Define loci and construct the locus of points that are a given distance from a fixed point, a straight line, equidistant from two given points and equidistant from two given straight lines,
  • Apply the above knowledge to construct a line perpendicular to a given straight line, construct special angles, divide a given straight line into a given number of equal parts, draw a line segment, find the point of intersection and find distance between flagpoles.

REVISION LESSON-SOLVED EXAM QUESTIONS (OBJ)

1
CONSTRUCTION & LOCI -OBJ QUEST-1
1 Minute
2
CONSTRUCTION & LOCI -OBJ QUEST-2
14 Minutes
3
CONTRUCTIONS & LOCI -OBJ QUEST-3
1 Minute
4
CONTRUCTIONS & LOCI -OBJ QUEST-4
1 Minute
5
CONTRUCTIONS & LOCI -OBJ QUEST-5
1 Minute
6
CONTRUCTIONS & LOCI -OBJ QUEST-6
1 Minute
7
CONTRUCTIONS & LOCI -OBJ QUEST-7
1 Minute
8
CONTRUCTIONS & LOCI -OBJ QUEST-8
1 Minute
9
CONTRUCTIONS & LOCI -OBJ QUEST-9
1 Minute
10
CONTRUCTIONS & LOCI -OBJ QUEST-10
1 Minute
11
CONTRUCTIONS & LOCI -OBJ QUEST-11
1 Minute
12
CONTRUCTIONS & LOCI -OBJ QUEST-12
1 Minute
13
CONTRUCTIONS & LOCI -OBJ QUEST-13
1 Minute
14
CONTRUCTIONS & LOCI -OBJ QUEST-14
1 Minute
15
CONTRUCTIONS & LOCI -OBJ QUEST-15
1 Minute
16
CONTRUCTIONS & LOCI -OBJ QUEST-16
1 Minute
17
CONTRUCTIONS & LOCI -OBJ QUEST-17
1 Minute
18
CONTRUCTIONS & LOCI -OBJ QUEST-18
1 Minutes
19
CONTRUCTIONS & LOCI -OBJ QUEST-19
22 Minutes
20
CONTRUCTIONS & LOCI -OBJ QUEST-20
1 Minute
21
CONTRUCTIONS & LOCI -OBJ QUEST-21
1 Minute
22
CONTRUCTIONS & LOCI -OBJ QUEST-22
1 Minute
23
CONTRUCTIONS & LOCI -OBJ QUEST-23
1 Minute
24
CONTRUCTIONS & LOCI -OBJ QUEST-24
1 Minute
25
CONTRUCTIONS & LOCI -OBJ QUEST-25
1 Minute
26
CONTRUCTIONS & LOCI -OBJ QUEST-26
1 Minute
27
CONTRUCTIONS & LOCI -OBJ QUEST-27
1 Minute
28
CONTRUCTIONS & LOCI -OBJ QUEST-28
1 Minute
29
CONTRUCTIONS & LOCI -OBJ QUEST-29
1 Minute
30
CONTRUCTIONS & LOCI -OBJ QUEST-30
1 Minute

REVISION LESSON-SOLVED EXAM QUESTIONS (THEORY)

1
Topic 19- CONSTRUCTION & LOCI-(Theory Question 341)
4 Minutes
2
Topic 19- CONSTRUCTION & LOCI-(Theory Question 342)
5 Minutes
3
Topic 19- CONSTRUCTION & LOCI-(Theory Question 343)
7 Minutes
4
Topic 19- CONSTRUCTION & LOCI-(Theory Question 344)
6 Minutes
5
Topic 19- CONSTRUCTION & LOCI-(Theory Question 345)
6 Minutes
6
Topic 19- CONSTRUCTION & LOCI-(Theory Question 346)
8 Minutes
7
Topic 19- CONSTRUCTION & LOCI-(Theory Question 347)
9 Minutes
8
Topic 19- CONSTRUCTION & LOCI-(Theory Question 348)
9 Minutes
9
Topic 19- CONSTRUCTION & LOCI-(Theory Question 349)
6 Minutes
10
Topic 19- CONSTRUCTION & LOCI-(Theory Question 350)
6 Minutes
11
Topic 19- CONSTRUCTION & LOCI-(Theory Question 351)
6 Minutes
12
Topic 19- CONSTRUCTION & LOCI-(Theory Question 352)
7 Minutes
13
Topic 19- CONSTRUCTION & LOCI-(Theory Question 353)
7 Minutes
14
Topic 19- CONSTRUCTION & LOCI-(Theory Question 354)
8 Minutes
15
Topic 19- CONSTRUCTION & LOCI-(Theory Question 355)
8 Minutes
16
Topic 19- CONSTRUCTION & LOCI-(Theory Question 356)
8 Minutes
17
Topic 19- CONSTRUCTION & LOCI-(Theory Question 357)
9 Minutes
18
Topic 19- CONSTRUCTION & LOCI-(Theory Question 358)
10 Minutes
19
Topic 19- CONSTRUCTION & LOCI-(Theory Question 359)
9 Minutes

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