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Constructions - Leaving Cert

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Constructions to be covered in the L.C. ORDINARY level

In addition to those learnt in the Junior Certificate Ordinary Level:

These constructions are made only using compasses and straight-edge:

16.  Circumcentre and circumcircle of a given triangle

17.  Incentre and incircle of a triangle of a given triangle

18.  Angle of 60' without using protractor or set-square

19.  Tangent to a given circle at a given point on it

20.  Parallelogram, given the length of the sides and the measure of the angles

21.  Centroid of a triangle

 

Constructions to be covered in the L.C. HIGHER level:

In addition to those learnt in the J.C. Higher Level and the L.C. Ordinary Level:

22.  Orthocentre of a triangle

16.  Circumcentre and circumcircle of a given triangle :

Circumcentre animation     Circumcentre Printable Instructions       Worksheet

Circumcircle animation       Circumcircle Printable instructions         Worksheet

17.  Incentre and incircle of a triangle:

Incentre animation         Incentre printable instructions         Worksheet

Incircle animation           Incircle Printable Instructions          Worksheet

18.  Angle of 60' without using protractor or set-square:

Animation             Printable Instructions         Worksheet

19.  Tangent to a given circle at a given point on it:

Animation         Printable Instructions         Worksheet

20.  Parallelogram, given the length of the sides and the measure of the angles

21.  Centroid of a triangle:

Animation         Printable Instructions           Worksheet

22.  Orthocentre of a triangle:

Animation         Printable Instructions          Worksheet