Geometric construction

Geometric construction!
Schedule: 
  • Learning goals
  • Construction demonstration
  • Construct yourself (videos or steps from the book)
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Geometric construction!
Schedule: 
  • Learning goals
  • Construction demonstration
  • Construct yourself (videos or steps from the book)

Slide 1 - Diapositive

Learning goals 
At the end of this lesson I can:
  •  Construct a bisector with compass and ruler
  • Construct a perpendicular bisector with compass and ruler
  • Construct a right angle

Slide 2 - Diapositive

Why learn geometric construction? 

Slide 3 - Diapositive

Why learn geometric construction? 
The skills you need to construct, will help you understand the construction and see links. 
This is useful for: 
- Architecture
- Measuring orbits and planetary motions  
- Interior design 
(It also helps when you forgot your protractor) 

Slide 4 - Diapositive

Slide 5 - Vidéo

Constructing an angle bisector
Bisector: A line that divides something exactly in half. 
Angle bisector: A line that divides an angle exactly in half 
If [OC] is the bisector of ∠ AOB, 
∠ AOC = ∠ BOC


Slide 6 - Diapositive

Slide 7 - Vidéo

Constructing a perpendicular bisector
Bisector: A line or segment that divides something exactly in half. 
Perpendicular bisector: A line or segment the is perpendicular to a segment and divides this exactly in half. 

Slide 8 - Diapositive

Slide 9 - Vidéo

Constructing a right angle
Right angle: a right angle is an angle that measures 90°




Slide 10 - Diapositive

Let's work! 

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Slide 11 - Diapositive